diff --git a/themes/base/ui.all.css b/themes/base/ui.all.css
index 9f8b78b9bd..46889fc33b 100644
--- a/themes/base/ui.all.css
+++ b/themes/base/ui.all.css
@@ -1,8 +1,3 @@
-@import "ui.core.css";
-@import "ui.accordion.css";
-@import "ui.datepicker.css";
-@import "ui.dialog.css";
-@import "ui.progressbar.css";
-@import "ui.resizable.css";
-@import "ui.slider.css";
-@import "ui.tabs.css";
+@import url("ui.all.css");
+@import url("ui.allwidgets.css");
+
diff --git a/themes/base/ui.allplugins.css b/themes/base/ui.allplugins.css
index 2a0bb31173..25aef9ed2e 100644
--- a/themes/base/ui.allplugins.css
+++ b/themes/base/ui.allplugins.css
@@ -1,7 +1,7 @@
-@import "ui.accordion.css";
-@import "ui.datepicker.css";
-@import "ui.dialog.css";
-@import "ui.progressbar.css";
-@import "ui.resizable.css";
-@import "ui.slider.css";
-@import "ui.tabs.css";
+@import url("ui.accordion.css");
+@import url("ui.datepicker.css");
+@import url("ui.dialog.css");
+@import url("ui.progressbar.css");
+@import url("ui.resizable.css");
+@import url("ui.slider.css");
+@import url("ui.tabs.css");