diff --git a/src/litegraph.js b/src/litegraph.js
index bc1a34e86..4effe006e 100644
--- a/src/litegraph.js
+++ b/src/litegraph.js
@@ -9732,6 +9732,8 @@ LGraphNode.prototype.executeAction = function(action)
                     ctx.fillRect(margin, y, widget_width - margin * 2, H);
                     var range = w.options.max - w.options.min;
                     var nvalue = (w.value - w.options.min) / range;
+					if(nvalue < 0.0) nvalue = 0.0;
+					if(nvalue > 1.0) nvalue = 1.0;
                     ctx.fillStyle = active_widget == w ? "#89A" : "#678";
                     ctx.fillRect(margin, y, nvalue * (widget_width - margin * 2), H);
 					if(show_text && !w.disabled)