diff --git a/cmd/completion.go b/cmd/completion.go
index ea8b2bc..052857f 100644
--- a/cmd/completion.go
+++ b/cmd/completion.go
@@ -88,7 +88,7 @@ func init() {
 
 	// Cobra supports Persistent Flags which will work for this command
 	// and all subcommands, e.g.:
-	// completionCmd.PersistentFlags().String("foo", "", "A help for foo")
+	// completionCmd.PersistentFlags().String("foo", utils.EmptyString, "A help for foo")
 
 	// Cobra supports local flags which will only run when this command
 	// is called directly, e.g.:
diff --git a/cmd/generate.go b/cmd/generate.go
index ae19c7e..bc5fd4c 100644
--- a/cmd/generate.go
+++ b/cmd/generate.go
@@ -17,6 +17,7 @@ package cmd
 
 import (
 	"github.com/ca-gip/dploy/internal/ansible"
+	"github.com/ca-gip/dploy/internal/utils"
 	"github.com/spf13/cobra"
 	"log"
 	"os"
@@ -37,15 +38,15 @@ func init() {
 	rootCmd.AddCommand(generateCmd)
 
 	// Required flags
-	generateCmd.Flags().StringSliceP("filter", "", nil, `filters inventory based its on vars ex: "foo==bar,bar!=foo""`)
+	generateCmd.Flags().StringSliceP("filter", utils.EmptyString, nil, `filters inventory based its on vars ex: "foo==bar,bar!=fooutils.EmptyString`)
 	_ = generateCmd.MarkFlagRequired("filter")
-	generateCmd.Flags().StringP("playbook", "p", "", "playbook to run")
+	generateCmd.Flags().StringP("playbook", "p", utils.EmptyString, "playbook to run")
 	_ = generateCmd.MarkFlagRequired("playbook")
 
 	// Ansible params
-	generateCmd.Flags().BoolP("ask-vault-password", "", false, "ask for vault password")
-	generateCmd.Flags().StringP("vault-password-file", "", "", "vault password file")
-	generateCmd.Flags().StringSliceP("skip-tags", "", nil, "only run plays and tasks whose tags do not match these values")
+	generateCmd.Flags().BoolP("ask-vault-password", utils.EmptyString, false, "ask for vault password")
+	generateCmd.Flags().StringP("vault-password-file", utils.EmptyString, utils.EmptyString, "vault password file")
+	generateCmd.Flags().StringSliceP("skip-tags", utils.EmptyString, nil, "only run plays and tasks whose tags do not match these values")
 	generateCmd.Flags().BoolP("check", "C", false, "don't make any changes; instead, try to predict some of the changes that may occur")
 	generateCmd.Flags().BoolP("diff", "D", false, "when changing (small) files and templates, show the differences in those files; works great with --check")
 	generateCmd.Flags().StringSliceP("limit", "l", nil, "further limit selected hosts to an additional pattern")
diff --git a/cmd/play.go b/cmd/play.go
index 65f918f..72006aa 100644
--- a/cmd/play.go
+++ b/cmd/play.go
@@ -18,6 +18,7 @@ package cmd
 import (
 	ansibler "github.com/apenella/go-ansible"
 	"github.com/ca-gip/dploy/internal/ansible"
+	"github.com/ca-gip/dploy/internal/utils"
 	log "github.com/sirupsen/logrus"
 	"os"
 	"strings"
@@ -40,13 +41,13 @@ func init() {
 	rootCmd.AddCommand(playCmd)
 
 	// Required flags
-	playCmd.Flags().StringSliceP("filter", "", nil, `filters inventory based its on vars ex: "foo==bar,bar!=foo""`)
+	playCmd.Flags().StringSliceP("filter", utils.EmptyString, nil, `filters inventory based its on vars ex: "foo==bar,bar!=fooutils.EmptyString`)
 	_ = playCmd.MarkFlagRequired("filter")
-	playCmd.Flags().StringP("playbook", "p", "", "playbook to run")
+	playCmd.Flags().StringP("playbook", "p", utils.EmptyString, "playbook to run")
 	_ = playCmd.MarkFlagRequired("playbook")
 
 	// Ansible params
-	playCmd.Flags().StringP("vault-password-file", "", "", "vault password file")
+	playCmd.Flags().StringP("vault-password-file", utils.EmptyString, utils.EmptyString, "vault password file")
 	playCmd.Flags().StringSliceP("limit", "l", nil, "further limit selected hosts to an additional pattern")
 	playCmd.Flags().StringSliceP("tags", "t", nil, "only run plays and tasks tagged with these values")
 }
diff --git a/cmd/root.go b/cmd/root.go
index 955ecb4..364cca9 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -17,6 +17,7 @@ package cmd
 
 import (
 	"fmt"
+	"github.com/ca-gip/dploy/internal/utils"
 	"github.com/mitchellh/go-homedir"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
@@ -61,7 +62,7 @@ func init() {
 	// Cobra supports persistent flags, which, if defined here,
 	// will be global for your application.
 
-	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.dploy.yaml)")
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", utils.EmptyString, "config file (default is $HOME/.dploy.yaml)")
 	rootCmd.PersistentFlags().StringVarP(&logLevel, "verbosity", "v", logrus.InfoLevel.String(), "Log level (debug, info, warn, error, fatal, panic")
 
 	// Cobra also supports local flags, which will only run
@@ -77,7 +78,7 @@ func init() {
 
 // initConfig reads in config file and ENV variables if set.
 func initConfig() {
-	if cfgFile != "" {
+	if cfgFile != utils.EmptyString {
 		// Use config file from the flag.
 		viper.SetConfigFile(cfgFile)
 	} else {
diff --git a/cmd/shared.go b/cmd/shared.go
index f090a66..3af05d2 100644
--- a/cmd/shared.go
+++ b/cmd/shared.go
@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 	"github.com/ca-gip/dploy/internal/ansible"
+	"github.com/ca-gip/dploy/internal/utils"
 	"github.com/spf13/cobra"
 	"regexp"
 	"strings"
@@ -17,12 +18,12 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 
 	availableKeys := k8s.InventoryKeys()
 
-	blank := key == "" && op == "" && value == ""
+	blank := key == utils.EmptyString && op == utils.EmptyString && value == utils.EmptyString
 	if blank {
 		return availableKeys, cobra.ShellCompDirectiveDefault
 	}
 
-	writingKey := key != "" && op == "" && value == ""
+	writingKey := key != utils.EmptyString && op == utils.EmptyString && value == utils.EmptyString
 	if writingKey {
 		var keysCompletion []string
 		for _, availableKey := range availableKeys {
@@ -43,7 +44,7 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 		return keysCompletion, cobra.ShellCompDirectiveDefault
 	}
 
-	writingOp := key != "" && op != "" && value == ""
+	writingOp := key != utils.EmptyString && op != utils.EmptyString && value == utils.EmptyString
 	if writingOp {
 		var prefixedOperator []string
 
@@ -56,7 +57,7 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 
 				for _, availableValue := range availableValues {
 
-					if availableValue != "" {
+					if availableValue != utils.EmptyString {
 						prefixedValues = append(prefixedValues, fmt.Sprintf("%s%s%s", key, op, availableValue))
 					}
 
@@ -81,7 +82,7 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 
 			for _, availableValue := range availableValues {
 
-				if availableValue != "" {
+				if availableValue != utils.EmptyString {
 					prefixedValues = append(prefixedValues, fmt.Sprintf("%s%s%s", key, foundOp, availableValue))
 				}
 
@@ -93,7 +94,7 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 		return prefixedOperator, cobra.ShellCompDirectiveDefault
 	}
 
-	writingValue := key != "" && op != "" && value != ""
+	writingValue := key != utils.EmptyString && op != utils.EmptyString && value != utils.EmptyString
 	if writingValue {
 		for _, allowedOperator := range ansible.AllowedOperators {
 
@@ -103,7 +104,7 @@ func filterCompletion(toComplete string, path string) ([]string, cobra.ShellComp
 				var prefixedValues []string
 
 				for _, availableValue := range availableValues {
-					if availableValue != "" && strings.HasPrefix(availableValue, value) {
+					if availableValue != utils.EmptyString && strings.HasPrefix(availableValue, value) {
 						prefixedValues = append(prefixedValues, fmt.Sprintf("%s%s%s", key, op, availableValue))
 					}
 
diff --git a/internal/ansible/filter_test.go b/internal/ansible/filter_test.go
index 90b28e1..9c9d9af 100644
--- a/internal/ansible/filter_test.go
+++ b/internal/ansible/filter_test.go
@@ -1,6 +1,7 @@
 package ansible
 
 import (
+	"github.com/ca-gip/dploy/internal/utils"
 	"github.com/go-test/deep"
 	"github.com/stretchr/testify/assert"
 	"testing"
@@ -58,7 +59,7 @@ func TestEval(t *testing.T) {
 	}{
 		"foo equal foo should pass": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    Equal,
 				Value: "foo",
 			},
@@ -67,7 +68,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo equal bar should fail": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    Equal,
 				Value: "foo",
 			},
@@ -76,7 +77,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo notequal bar should pass": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    NotEqual,
 				Value: "foo",
 			},
@@ -85,7 +86,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo notequal foo should fail": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    NotEqual,
 				Value: "foo",
 			},
@@ -94,7 +95,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo endwith oo should pass": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    EndWith,
 				Value: "foo",
 			},
@@ -103,7 +104,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo endwith fo should fail": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    EndWith,
 				Value: "foo",
 			},
@@ -112,7 +113,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo contains o should pass": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    Contains,
 				Value: "foo",
 			},
@@ -121,7 +122,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo contains z should fail": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    Contains,
 				Value: "foo",
 			},
@@ -130,7 +131,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo StartWith fo should pass": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    StartWith,
 				Value: "foo",
 			},
@@ -139,7 +140,7 @@ func TestEval(t *testing.T) {
 		},
 		"foo StartWith oo should fail": {
 			given: Filter{
-				Key:   "",
+				Key:   utils.EmptyString,
 				Op:    StartWith,
 				Value: "foo",
 			},
diff --git a/internal/ansible/inventory_test.go b/internal/ansible/inventory_test.go
index 6783456..6d48557 100644
--- a/internal/ansible/inventory_test.go
+++ b/internal/ansible/inventory_test.go
@@ -1,6 +1,7 @@
 package ansible
 
 import (
+	"github.com/ca-gip/dploy/internal/utils"
 	"github.com/relex/aini"
 	"github.com/stretchr/testify/assert"
 	"testing"
@@ -23,7 +24,7 @@ func TestProject_InventoryKeys(t *testing.T) {
 		"single inventory with one var should return one key ": {
 			inventories: []*Inventory{{
 				Data: &aini.InventoryData{
-					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": ""}}},
+					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": utils.EmptyString}}},
 				},
 			}},
 			expect: []string{"key1"},
@@ -31,7 +32,7 @@ func TestProject_InventoryKeys(t *testing.T) {
 		"single inventory with two var should return two key ": {
 			inventories: []*Inventory{{
 				Data: &aini.InventoryData{
-					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": "", "key2": ""}}},
+					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": utils.EmptyString, "key2": utils.EmptyString}}},
 				},
 			}},
 			expect: []string{"key1", "key2"},
@@ -39,20 +40,20 @@ func TestProject_InventoryKeys(t *testing.T) {
 		"two inventories with same var should return one key ": {
 			inventories: []*Inventory{{
 				Data: &aini.InventoryData{
-					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": ""}}},
+					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": utils.EmptyString}}},
 				},
 			}, {Data: &aini.InventoryData{
-				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": ""}}},
+				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": utils.EmptyString}}},
 			}}},
 			expect: []string{"key1"},
 		},
 		"two inventories with different var should return two key ": {
 			inventories: []*Inventory{{
 				Data: &aini.InventoryData{
-					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": ""}}},
+					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": utils.EmptyString}}},
 				},
 			}, {Data: &aini.InventoryData{
-				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key2": ""}}},
+				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key2": utils.EmptyString}}},
 			}}},
 			expect: []string{"key1", "key2"},
 		},
@@ -136,7 +137,7 @@ func TestProject_InventoryValues(t *testing.T) {
 					Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key1": "value1"}}},
 				},
 			}, {Data: &aini.InventoryData{
-				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key2": ""}}},
+				Groups: map[string]*aini.Group{"all": {Vars: map[string]string{"key2": utils.EmptyString}}},
 			}}},
 			given:  "key1",
 			expect: []string{"value1"},
diff --git a/internal/ansible/project.go b/internal/ansible/project.go
index 8d1e724..3d2925b 100644
--- a/internal/ansible/project.go
+++ b/internal/ansible/project.go
@@ -64,7 +64,7 @@ func (p Project) InventoryValues(key string) (values []string) {
 	valueSet := utils.NewSet()
 	for _, inventory := range p.Inventories {
 		if inventory.Data != nil {
-			if value := inventory.Data.Groups["all"].Vars[key]; value != "" {
+			if value := inventory.Data.Groups["all"].Vars[key]; value != utils.EmptyString {
 				valueSet.Add(value)
 			}
 		}
diff --git a/internal/ansible/role.go b/internal/ansible/role.go
index 1a22ca7..5e8b05a 100644
--- a/internal/ansible/role.go
+++ b/internal/ansible/role.go
@@ -75,7 +75,7 @@ func (role *Role) LoadFromPath(rootPath string) (err error) {
 				return nil
 			}
 
-			resTask := []Task{}
+			var resTask []Task
 			for _, task := range roleTasks.Tasks {
 				resTask = append(resTask, task)
 			}
diff --git a/internal/utils/logs.go b/internal/utils/logs.go
index 77cc842..464147f 100644
--- a/internal/utils/logs.go
+++ b/internal/utils/logs.go
@@ -25,8 +25,8 @@ func WrapRed(msg ...string) string {
 
 func wrapLog(color string, msg ...string) string {
 	if isTerminal() {
-		return fmt.Sprintf("\033[1;"+color+"m%v\033[0m", strings.Join(msg, ""))
+		return fmt.Sprintf("\033[1;"+color+"m%v\033[0m", strings.Join(msg, EmptyString))
 	} else {
-		return fmt.Sprintf(strings.Join(msg, ""))
+		return fmt.Sprintf(strings.Join(msg, EmptyString))
 	}
 }