diff --git a/src/css.js b/src/css.js
index fc4524ed0..94a1d234f 100644
--- a/src/css.js
+++ b/src/css.js
@@ -283,7 +283,7 @@ jQuery.extend({
 				return;
 			}
 
-			// If a number, add 'px' to the (except for certain CSS properties)
+			// If a number was passed in, add 'px' (except for certain CSS properties)
 			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
 				value += "px";
 			}