diff --git a/lib/processors/opacity.js b/lib/processors/opacity.js
index 6207906..3a8d3e8 100644
--- a/lib/processors/opacity.js
+++ b/lib/processors/opacity.js
@@ -28,7 +28,7 @@ module.exports.processor = function (css) {
         }
       });
 
-      // adds new porperty only if it's not present yet
+      // adds new property only if it's not present yet
       if (!isFilterAlreadyPresent) {
         rule.insertAfter(decl, {prop: PROP_REPLACE, value: VAL_REPLACE});
       }