diff --git a/app/controllers/mock.php b/app/controllers/mock.php
index f0e0d7b50f..91318bbb80 100644
--- a/app/controllers/mock.php
+++ b/app/controllers/mock.php
@@ -334,7 +334,7 @@ App::get('/v1/mock/tests/general/400-error')
     ->label('sdk.platform', [APP_PLATFORM_CLIENT, APP_PLATFORM_SERVER])
     ->label('sdk.namespace', 'general')
     ->label('sdk.method', 'error400')
-    ->label('sdk.description', 'Mock an 400 failed request.')
+    ->label('sdk.description', 'Mock a 400 failed request.')
     ->label('sdk.response.code', Response::STATUS_CODE_BAD_REQUEST)
     ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
     ->label('sdk.response.model', Response::MODEL_ERROR)
@@ -350,7 +350,7 @@ App::get('/v1/mock/tests/general/500-error')
     ->label('sdk.platform', [APP_PLATFORM_CLIENT, APP_PLATFORM_SERVER])
     ->label('sdk.namespace', 'general')
     ->label('sdk.method', 'error500')
-    ->label('sdk.description', 'Mock an 500 failed request.')
+    ->label('sdk.description', 'Mock a 500 failed request.')
     ->label('sdk.response.code', Response::STATUS_CODE_INTERNAL_SERVER_ERROR)
     ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
     ->label('sdk.response.model', Response::MODEL_ERROR)
@@ -366,7 +366,7 @@ App::get('/v1/mock/tests/general/502-error')
     ->label('sdk.auth', [APP_PLATFORM_CLIENT, APP_PLATFORM_SERVER])
     ->label('sdk.namespace', 'general')
     ->label('sdk.method', 'error502')
-    ->label('sdk.description', 'Mock an 502 bad gateway.')
+    ->label('sdk.description', 'Mock a 502 bad gateway.')
     ->label('sdk.response.code', Response::STATUS_CODE_BAD_GATEWAY)
     ->label('sdk.response.type', Response::CONTENT_TYPE_TEXT)
     ->label('sdk.mock', true)