diff --git a/README.md b/README.md
index b5515c00..1363ef8d 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ import (
 func main() {
 	client := meilisearch.NewClient(meilisearch.ClientConfig{
                 Host: "http://127.0.0.1:7700",
-                MasterKey: "masterKey",
+                ApiKey: "masterKey",
         })
 	// An index is where the documents are stored.
 	index := client.Index("indexUID")
diff --git a/client.go b/client.go
index 04c601d2..85ca46ed 100644
--- a/client.go
+++ b/client.go
@@ -14,8 +14,8 @@ type ClientConfig struct {
 	// Example: 'http://localhost:7700'
 	Host string
 
-	// MasterKey is optional
-	MasterKey string
+	// ApiKey is optional
+	ApiKey string
 
 	// Timeout is optional
 	Timeout time.Duration
diff --git a/client_request.go b/client_request.go
index fba12ef5..b48312e0 100644
--- a/client_request.go
+++ b/client_request.go
@@ -104,8 +104,8 @@ func (c *Client) sendRequest(req *internalRequest, internalError *Error, respons
 
 	// adding request headers
 	request.Header.Set("Content-Type", "application/json")
-	if c.config.MasterKey != "" {
-		request.Header.Set("X-Meili-API-Key", c.config.MasterKey)
+	if c.config.ApiKey != "" {
+		request.Header.Set("X-Meili-API-Key", c.config.ApiKey)
 	}
 
 	// request is sent
diff --git a/client_test.go b/client_test.go
index 2c0cee9f..1cbd7646 100644
--- a/client_test.go
+++ b/client_test.go
@@ -145,8 +145,8 @@ func TestClient_Health(t *testing.T) {
 			name: "TestHealthWIthBadUrl",
 			client: &Client{
 				config: ClientConfig{
-					Host:      "http://wrongurl:1234",
-					MasterKey: masterKey,
+					Host:   "http://wrongurl:1234",
+					ApiKey: masterKey,
 				},
 				httpClient: &fasthttp.Client{
 					Name: "meilsearch-client",
@@ -212,8 +212,8 @@ func TestClient_IsHealthy(t *testing.T) {
 			name: "TestIsHealthyWIthBadUrl",
 			client: &Client{
 				config: ClientConfig{
-					Host:      "http://wrongurl:1234",
-					MasterKey: masterKey,
+					Host:   "http://wrongurl:1234",
+					ApiKey: masterKey,
 				},
 				httpClient: &fasthttp.Client{
 					Name: "meilsearch-client",
diff --git a/main_test.go b/main_test.go
index 11ebe056..24087202 100644
--- a/main_test.go
+++ b/main_test.go
@@ -35,8 +35,8 @@ func deleteAllIndexes(client ClientInterface) (ok bool, err error) {
 
 func SetUpBasicIndex() {
 	client := NewClient(ClientConfig{
-		Host:      "http://localhost:7700",
-		MasterKey: masterKey,
+		Host:   "http://localhost:7700",
+		ApiKey: masterKey,
 	})
 	index := client.Index("indexUID")
 
@@ -61,8 +61,8 @@ func SetUpBasicIndex() {
 
 func SetUpIndexForFaceting() {
 	client := NewClient(ClientConfig{
-		Host:      "http://localhost:7700",
-		MasterKey: masterKey,
+		Host:   "http://localhost:7700",
+		ApiKey: masterKey,
 	})
 	index := client.Index("indexUID")
 
@@ -102,13 +102,13 @@ func SetUpIndexForFaceting() {
 var masterKey = "masterKey"
 var primaryKey = "primaryKey"
 var defaultClient = NewClient(ClientConfig{
-	Host:      "http://localhost:7700",
-	MasterKey: masterKey,
+	Host:   "http://localhost:7700",
+	ApiKey: masterKey,
 })
 
 var customClient = NewFastHTTPCustomClient(ClientConfig{
-	Host:      "http://localhost:7700",
-	MasterKey: masterKey,
+	Host:   "http://localhost:7700",
+	ApiKey: masterKey,
 },
 	&fasthttp.Client{
 		TLSConfig: &tls.Config{InsecureSkipVerify: true},
@@ -116,9 +116,9 @@ var customClient = NewFastHTTPCustomClient(ClientConfig{
 	})
 
 var timeoutClient = NewClient(ClientConfig{
-	Host:      "http://localhost:7700",
-	MasterKey: masterKey,
-	Timeout:   1,
+	Host:    "http://localhost:7700",
+	ApiKey:  masterKey,
+	Timeout: 1,
 })
 
 func TestMain(m *testing.M) {