diff --git a/platform/org.eclipse.platform/css/e4_basestyle.css b/platform/org.eclipse.platform/css/e4_basestyle.css
index 8570188..ca2dacd 100644
--- a/platform/org.eclipse.platform/css/e4_basestyle.css
+++ b/platform/org.eclipse.platform/css/e4_basestyle.css
@@ -7,7 +7,7 @@
 }
 
 .MPartStack {
-    tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+    tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
     unselected-tabs-color: #FFFFFF #FFFFFF #FFFFFF 100% 100%;
     outer-keyline-color: #FFFFFF;
 	inner-keyline-color: #FFFFFF;
diff --git a/platform/org.eclipse.platform/css/e4_default.css b/platform/org.eclipse.platform/css/e4_default.css
index ffada86..75577c3 100644
--- a/platform/org.eclipse.platform/css/e4_default.css
+++ b/platform/org.eclipse.platform/css/e4_default.css
@@ -18,7 +18,7 @@
 }
 
 .MPartStack {
-    tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+    tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
     unselected-tabs-color: #FFFFFF #FFFFFF #FFFFFF 100% 100%;
     outer-keyline-color: #FFFFFF;
 	inner-keyline-color: #FFFFFF;
diff --git a/platform/org.eclipse.platform/css/e4_default_gtk.css b/platform/org.eclipse.platform/css/e4_default_gtk.css
index 64669ed..365d302 100644
--- a/platform/org.eclipse.platform/css/e4_default_gtk.css
+++ b/platform/org.eclipse.platform/css/e4_default_gtk.css
@@ -30,7 +30,7 @@
 }
 
 #org-eclipse-ui-editorss {
-   tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+   tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
    unselected-tabs-color: #F0F0F0 #F0F0F0 #F0F0F0 100% 100%;
    outer-keyline-color: #B4B4B4;
    inner-keyline-color: #F0F0F0;
diff --git a/platform/org.eclipse.platform/css/e4_default_mac.css b/platform/org.eclipse.platform/css/e4_default_mac.css
index 92f47e6..d60c47b 100644
--- a/platform/org.eclipse.platform/css/e4_default_mac.css
+++ b/platform/org.eclipse.platform/css/e4_default_mac.css
@@ -28,7 +28,7 @@
 }
 
 #org-eclipse-ui-editorss {
-   tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+   tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
    unselected-tabs-color: #D6DDE5 #D6DDE5 #D6DDE5 100% 100%;
    outer-keyline-color: #D6DDE5;
    inner-keyline-color: #D6DDE5;
diff --git a/platform/org.eclipse.platform/css/e4_default_win7.css b/platform/org.eclipse.platform/css/e4_default_win7.css
index c7467f6..52130d3 100644
--- a/platform/org.eclipse.platform/css/e4_default_win7.css
+++ b/platform/org.eclipse.platform/css/e4_default_win7.css
@@ -28,7 +28,7 @@
 }
 
 #org-eclipse-ui-editorss {
-   tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+   tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
    unselected-tabs-color: #F0F0F0 #F0F0F0 #F0F0F0 100% 100%;
    outer-keyline-color: #B4B4B4;
    inner-keyline-color: #F0F0F0;
diff --git a/platform/org.eclipse.platform/css/e4_default_winxp_blu.css b/platform/org.eclipse.platform/css/e4_default_winxp_blu.css
index ec15c0c..f8b6781 100644
--- a/platform/org.eclipse.platform/css/e4_default_winxp_blu.css
+++ b/platform/org.eclipse.platform/css/e4_default_winxp_blu.css
@@ -29,7 +29,7 @@
 }
 
 #org-eclipse-ui-editorss {
-   tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+   tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
    unselected-tabs-color: #F0F0F0 #F0F0F0 #F0F0F0 100% 100%;
    outer-keyline-color: #B4B4B4;
    inner-keyline-color: #F0F0F0;
diff --git a/platform/org.eclipse.platform/css/e4_default_winxp_olv.css b/platform/org.eclipse.platform/css/e4_default_winxp_olv.css
index a201fbf..daa4f0c 100644
--- a/platform/org.eclipse.platform/css/e4_default_winxp_olv.css
+++ b/platform/org.eclipse.platform/css/e4_default_winxp_olv.css
@@ -15,7 +15,7 @@
 }
 
 .MPartStack {
-    tab-renderer: url('platform:/plugin/org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
+    tab-renderer: url('bundleclass://org.eclipse.e4.ui.workbench.renderers.swt/org.eclipse.e4.ui.workbench.renderers.swt.CTabRendering');
     unselected-tabs-color: #FFFFFF #FFFFFF #FFFFFF 100% 100%;
     outer-keyline-color: #FFFFFF;
 	inner-keyline-color: #FFFFFF;