diff --git a/ui/jquery.ui.position.js b/ui/jquery.ui.position.js
index 3992e1c63..0d03a4551 100644
--- a/ui/jquery.ui.position.js
+++ b/ui/jquery.ui.position.js
@@ -82,7 +82,7 @@ $.fn.position = function( options ) {
 
 	if ( options.at[0] === "right" ) {
 		basePosition.left += targetWidth;
-	} else if (options.at[0] === center ) {
+	} else if ( options.at[0] === center ) {
 		basePosition.left += targetWidth / 2;
 	}
 
@@ -102,9 +102,9 @@ $.fn.position = function( options ) {
 			marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0,
 			marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0,
 			collisionWidth = elemWidth + marginLeft +
-				parseInt( $.curCSS( this, "marginRight", true ) ) || 0,
+				( parseInt( $.curCSS( this, "marginRight", true ) ) || 0 ),
 			collisionHeight = elemHeight + marginTop +
-				parseInt( $.curCSS( this, "marginBottom", true ) ) || 0,
+				( parseInt( $.curCSS( this, "marginBottom", true ) ) || 0 ),
 			position = $.extend( {}, basePosition ),
 			collisionPosition;