diff --git a/phpBB/composer.json b/phpBB/composer.json
index 2f4987afd8..5e88144bc4 100644
--- a/phpBB/composer.json
+++ b/phpBB/composer.json
@@ -4,7 +4,6 @@
 		"symfony/config": "2.1.*",
 		"symfony/dependency-injection": "2.1.*",
 		"symfony/event-dispatcher": "2.1.*",
-		"symfony/event-dispatcher": "2.1.*",
 		"symfony/yaml": "2.1.*"
 	},
 	"require-dev": {