diff --git a/test/support/test_helper.js b/test/support/test_helper.js
index d9035a97..f964a17c 100644
--- a/test/support/test_helper.js
+++ b/test/support/test_helper.js
@@ -113,6 +113,10 @@ after(function(done) {
 
 function deleteRedisKeys(keysToDelete, callback) {
 
+    if (Object.keys(keysToDelete).length === 0) {
+        return callback();
+    }
+
     function taskDone(k) {
         delete keysToDelete[k];
         if (Object.keys(keysToDelete).length === 0) {