diff --git a/lib/private/legacy/app.php b/lib/private/legacy/app.php
index 24c7a344e001d..4b8440d2de9ff 100644
--- a/lib/private/legacy/app.php
+++ b/lib/private/legacy/app.php
@@ -754,6 +754,8 @@ public static function getAllApps() {
 			}
 		}
 
+		$apps = array_unique($apps);
+
 		return $apps;
 	}