diff -r ef0373b55136 -r 758a864f9613 tools/designer/src/lib/shared/stylesheeteditor.cpp
--- a/tools/designer/src/lib/shared/stylesheeteditor.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/tools/designer/src/lib/shared/stylesheeteditor.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -79,6 +79,7 @@
     : QTextEdit(parent)
 {
     setTabStopWidth(fontMetrics().width(QLatin1Char(' '))*4);
+    setAcceptRichText(false);
     new CssHighlighter(document());
 }