diff --git a/src/effects.js b/src/effects.js
index 241dbd03..8c0985b6 100644
--- a/src/effects.js
+++ b/src/effects.js
@@ -181,9 +181,9 @@ jQuery.fn.extend({
 
 						// We need to compute starting value
 						if ( unit !== "px" ) {
-							self.style[ name ] = (end || 1) + unit;
+							jQuery.style( self, name, (end || 1) + unit);
 							start = ((end || 1) / e.cur(true)) * start;
-							self.style[ name ] = start + unit;
+							jQuery.style( self, name, start + unit);
 						}
 
 						// If a +=/-= token was provided, we're doing a relative animation