diff --git a/composer.json b/composer.json
index cfb308e..83a4bd3 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     "require-dev": {
         "phpunit/phpunit": "^5.7",
         "squizlabs/php_codesniffer": "^3.0",
-	"sminnee/phpunit-mock-objects": "^3.4.5"
+        "sminnee/phpunit-mock-objects": "^3.4.5"
     },
     "extra": {
         "branch-alias": {