diff --git a/share/qtcreator/themes/defaultflat.creatortheme b/share/qtcreator/themes/defaultflat.creatortheme
index a3899aed899..9b208b961c2 100644
--- a/share/qtcreator/themes/defaultflat.creatortheme
+++ b/share/qtcreator/themes/defaultflat.creatortheme
@@ -42,7 +42,7 @@ DoubleTabWidget2ndTabActiveTextColor=ffffffff
 DoubleTabWidget2ndTabBackgroundColor=ffff0000
 DoubleTabWidget2ndTabInactiveTextColor=ff000000
 EditorPlaceholderColor=ffdddddd
-FancyToolBarSeparatorColor=43ffffff
+FancyToolBarSeparatorColor=toolBarItemDisabled
 FancyTabBarBackgroundColor=shadowBackground
 FancyTabWidgetDisabledSelectedTextColor=toolBarItemDisabled
 FancyTabWidgetDisabledUnselectedTextColor=toolBarItemDisabled