diff --git a/scripts/base/utils/queue.bro b/scripts/base/utils/queue.bro
index c5e3bcf906..438529f579 100644
--- a/scripts/base/utils/queue.bro
+++ b/scripts/base/utils/queue.bro
@@ -126,6 +126,7 @@ function merge(q1: Queue, q2: Queue): Queue
 		++i;
 		++j;
 		}
+	return ret;
 	}
 
 function len(q: Queue): count