diff --git a/open-default_linux.go b/open-default_linux.go
index 79e1db8..7daeac7 100644
--- a/open-default_linux.go
+++ b/open-default_linux.go
@@ -5,8 +5,11 @@
 
 package main
 
-import "os/exec"
+import (
+	"fmt"
+)
 
 func openWithDefault(filePath string) error {
 	// TODO: Add code to open file with default program on linux
+	return fmt.Errorf("\"open with default application\" not implemented in linux")
 }
diff --git a/open-default_windows.go b/open-default_windows.go
index 036a99a..d8984e8 100644
--- a/open-default_windows.go
+++ b/open-default_windows.go
@@ -5,7 +5,9 @@
 
 package main
 
-import "os/exec"
+import (
+	"os/exec"
+)
 
 func openWithDefault(filePath string) error {
 	cmd := exec.Command("explorer", filePath)