diff --git a/themes/base/jquery.ui.theme.css b/themes/base/jquery.ui.theme.css
index 459d1a212..89f03aa86 100644
--- a/themes/base/jquery.ui.theme.css
+++ b/themes/base/jquery.ui.theme.css
@@ -403,13 +403,15 @@
 /* Overlays */
 .ui-widget-overlay {
 	background: #aaaaaa/*{bgColorOverlay}*/ url(images/ui-bg_flat_0_aaaaaa_40x100.png)/*{bgImgUrlOverlay}*/ 50%/*{bgOverlayXPos}*/ 50%/*{bgOverlayYPos}*/ repeat-x/*{bgOverlayRepeat}*/;
-	opacity: .3; filter:Alpha(Opacity=30)/*{opacityOverlay}*/;
+	/* no space between ".3;" and "filter" because themeRoller looks back to the first space for replacement */
+	opacity: .3;filter:Alpha(Opacity=30)/*{opacityOverlay}*/;
 }
 .ui-widget-shadow {
 	margin: -8px/*{offsetTopShadow}*/ 0 0 -8px/*{offsetLeftShadow}*/;
 	padding: 8px/*{thicknessShadow}*/;
 	background: #aaaaaa/*{bgColorShadow}*/ url(images/ui-bg_flat_0_aaaaaa_40x100.png)/*{bgImgUrlShadow}*/ 50%/*{bgShadowXPos}*/ 50%/*{bgShadowYPos}*/ repeat-x/*{bgShadowRepeat}*/;
-	opacity: .3; filter:Alpha(Opacity=30)/*{opacityShadow}*/;
+	/* no space between ".3;" and "filter" because themeRoller looks back to the first space for replacement */
+	opacity: .3;filter:Alpha(Opacity=30)/*{opacityShadow}*/;
 	-moz-border-radius: 8px/*{cornerRadiusShadow}*/;
 	-khtml-border-radius: 8px/*{cornerRadiusShadow}*/;
 	-webkit-border-radius: 8px/*{cornerRadiusShadow}*/;