diff --git a/lib/private/legacy/app.php b/lib/private/legacy/app.php
index a33c9be20fc..627107a63a8 100644
--- a/lib/private/legacy/app.php
+++ b/lib/private/legacy/app.php
@@ -768,6 +768,8 @@ class OC_App {
 			}
 		}
 
+		$apps = array_unique($apps);
+
 		return $apps;
 	}