diff --git a/src/definitions/modules/dimmer.js b/src/definitions/modules/dimmer.js
index 41deea3d3..b29e94b69 100644
--- a/src/definitions/modules/dimmer.js
+++ b/src/definitions/modules/dimmer.js
@@ -385,7 +385,7 @@ $.fn.dimmer = function(parameters) {
               colorArray = color.split(','),
               isRGBA     = (colorArray && colorArray.length == 4)
             ;
-            opacity    = settings.opacity || opacity;
+            opacity    = settings.opacity === 0 ? 0 : settings.opacity || opacity;
             if(isRGBA) {
               colorArray[3] = opacity + ')';
               color         = colorArray.join(',');