diff --git a/dvwa/js/add_event_listeners.js b/dvwa/js/add_event_listeners.js
index 5d9a82fd6..6c00f3e2c 100644
--- a/dvwa/js/add_event_listeners.js
+++ b/dvwa/js/add_event_listeners.js
@@ -22,3 +22,5 @@ function addEventListeners() {
 }
 
 addEventListeners();
+
+var solve_button = document.getElementById ("solve");