diff --git a/share/qtcreator/themes/flat-dark.creatortheme b/share/qtcreator/themes/flat-dark.creatortheme
index 06572ece1ed..32eb10936c2 100644
--- a/share/qtcreator/themes/flat-dark.creatortheme
+++ b/share/qtcreator/themes/flat-dark.creatortheme
@@ -190,6 +190,7 @@ DrawSearchResultWidgetFrame=false
 DrawTargetSelectorBottom=false
 DrawToolBarHighlights=false
 ApplyThemePaletteGlobally=true
+FlatToolBars=true
 FlatSideBarIcons=true
 FlatProjectsMode=true
 FlatMenuBar=true
@@ -199,6 +200,3 @@ ToolBarIconShadow=true
 DetailsWidgetHeaderGradient\1\color=0
 DetailsWidgetHeaderGradient\1\pos=1
 DetailsWidgetHeaderGradient\size=1
-
-[Style]
-WidgetStyle=StyleFlat
diff --git a/share/qtcreator/themes/flat-light.creatortheme b/share/qtcreator/themes/flat-light.creatortheme
index ab4ea722c99..2a9ad235ed2 100644
--- a/share/qtcreator/themes/flat-light.creatortheme
+++ b/share/qtcreator/themes/flat-light.creatortheme
@@ -189,6 +189,7 @@ DrawSearchResultWidgetFrame=false
 DrawTargetSelectorBottom=false
 DrawToolBarHighlights=false
 ApplyThemePaletteGlobally=false
+FlatToolBars=true
 FlatSideBarIcons=true
 FlatProjectsMode=false
 FlatMenuBar=false
@@ -198,6 +199,3 @@ ToolBarIconShadow=false
 DetailsWidgetHeaderGradient\1\color=0
 DetailsWidgetHeaderGradient\1\pos=1
 DetailsWidgetHeaderGradient\size=1
-
-[Style]
-WidgetStyle=StyleFlat