diff --git a/js/server/modules/org/arangodb/testing.js b/js/server/modules/org/arangodb/testing.js
index 3ddf307798..d7a1a1f98f 100644
--- a/js/server/modules/org/arangodb/testing.js
+++ b/js/server/modules/org/arangodb/testing.js
@@ -454,6 +454,7 @@ function cleanupDBDirectories(options) {
         // print("deleted " + cleanupDirectories[i]);
       }
     }
+    cleanupDirectories = [];
   }
 }