diff --git a/pages/draw_image.html b/pages/draw_image.html
index 20844a28..f724d110 100644
--- a/pages/draw_image.html
+++ b/pages/draw_image.html
@@ -207,8 +207,8 @@ <h3>Extra</h3>
 
 		// DRAWING EVENT HANDLERS
 
-		canvas.addEventListener('mousedown', function() {mousedown(canvas, event);});
-		canvas.addEventListener('mousemove',function() {mousemove(canvas, event);});
+		canvas.addEventListener('mousedown', function(event) {mousedown(canvas, event);});
+		canvas.addEventListener('mousemove',function(event) {mousemove(canvas, event);});
 		canvas.addEventListener('mouseup',mouseup);
 
 		// CREATE CANVAS
@@ -339,4 +339,4 @@ <h3>Extra</h3>
 			isMouseDown=false
 			store()
 		}
-</script>
\ No newline at end of file
+</script>