diff --git a/src/extensions/cytoscape.renderer.canvas.js b/src/extensions/cytoscape.renderer.canvas.js
index 0021435af..e960f59e1 100644
--- a/src/extensions/cytoscape.renderer.canvas.js
+++ b/src/extensions/cytoscape.renderer.canvas.js
@@ -855,7 +855,7 @@
 			if (r.zoomData.freeToZoom) {
 				e.preventDefault();
 				
-				var diff = e.wheelDeltaY / 1000 || e.detail / -32;
+				var diff = e.wheelDeltaY / 1000 || e.wheelDelta / 1000 || e.detail / -32;
 				
 				if( cy.panningEnabled() && cy.zoomingEnabled() ){
 					cy.zoom({level: cy.zoom() * Math.pow(10, diff), position: {x: unpos[0], y: unpos[1]}});