diff --git a/examples/Tools/Wave.html b/examples/Tools/Wave.html
index 08b42bdd..7704a430 100644
--- a/examples/Tools/Wave.html
+++ b/examples/Tools/Wave.html
@@ -54,6 +54,7 @@
 		var path;
 		function onMouseDown(event) {
 			path = new Path();
+			path.strokeColor = '#000000';
 		}
 
 		var mul = 1;