diff --git a/src/main/resources/webgoat/static/plugins/bootstrap-slider/js/bootstrap-slider.js b/src/main/resources/webgoat/static/plugins/bootstrap-slider/js/bootstrap-slider.js
index 40a6da46d6..729edd1ef4 100644
--- a/src/main/resources/webgoat/static/plugins/bootstrap-slider/js/bootstrap-slider.js
+++ b/src/main/resources/webgoat/static/plugins/bootstrap-slider/js/bootstrap-slider.js
@@ -222,7 +222,7 @@
 				});
 			} else {
 				$(document).on({
-					mousemove: $.proxy(this.mousemove, this),
+					mousemove: (this.mousemove).bind(this),
 					mouseup: (this.mouseup).bind(this)
 				});
 			}