diff --git a/src/servers/app/Decorator.cpp b/src/servers/app/Decorator.cpp
index e8ec2195d7..c780fae443 100644
--- a/src/servers/app/Decorator.cpp
+++ b/src/servers/app/Decorator.cpp
@@ -99,9 +99,9 @@ Decorator::SetFlags(uint32 flags, BRegion* updateRegion)
 	if (flags & B_NOT_RESIZABLE)
 		flags |= B_NOT_H_RESIZABLE | B_NOT_V_RESIZABLE;
 
-	fFootprintValid = false;
-		// the border might have changed (smaller/larger tab)
 	_SetFlags(flags, updateRegion);
+	_InvalidateFootprint();
+		// the border might have changed (smaller/larger tab)
 }
 
 
@@ -110,8 +110,8 @@ Decorator::SetFlags(uint32 flags, BRegion* updateRegion)
 void
 Decorator::FontsChanged(DesktopSettings& settings, BRegion* updateRegion)
 {
-	fFootprintValid = false;
 	_FontsChanged(settings, updateRegion);
+	_InvalidateFootprint();
 }
 
 
@@ -122,9 +122,9 @@ void
 Decorator::SetLook(DesktopSettings& settings, window_look look,
 	BRegion* updateRect)
 {
-	fFootprintValid = false;
-		// the border very likely changed
 	_SetLook(settings, look, updateRect);
+	_InvalidateFootprint();
+		// the border very likely changed
 }
 
 
@@ -183,12 +183,12 @@ Decorator::SetZoom(bool pressed)
 void
 Decorator::SetTitle(const char* string, BRegion* updateRegion)
 {
-	fFootprintValid = false;
-		// the border very likely changed
-
 	fTitle.SetTo(string);
 	_SetTitle(string, updateRegion);
 
+	_InvalidateFootprint();
+		// the border very likely changed
+
 	// TODO: redraw?
 }
 
@@ -406,8 +406,8 @@ Decorator::ResizeBy(float x, float y, BRegion* dirty)
 void
 Decorator::ResizeBy(BPoint offset, BRegion* dirty)
 {
-	fFootprintValid = false;
 	_ResizeBy(offset, dirty);
+	_InvalidateFootprint();
 }
 
 
@@ -415,7 +415,7 @@ bool
 Decorator::SetTabLocation(float location, BRegion* updateRegion)
 {
 	if (_SetTabLocation(location, updateRegion)) {
-		fFootprintValid = false;
+		_InvalidateFootprint();
 		return true;
 	}
 	return false;
@@ -426,7 +426,7 @@ bool
 Decorator::SetSettings(const BMessage& settings, BRegion* updateRegion)
 {
 	if (_SetSettings(settings, updateRegion)) {
-		fFootprintValid = false;
+		_InvalidateFootprint();
 		return true;
 	}
 	return false;
@@ -667,3 +667,10 @@ void
 Decorator::_GetFootprint(BRegion *region)
 {
 }
+
+
+void
+Decorator::_InvalidateFootprint()
+{
+	fFootprintValid = false;
+}
diff --git a/src/servers/app/Decorator.h b/src/servers/app/Decorator.h
index 44d113b500..c5d8fd667e 100644
--- a/src/servers/app/Decorator.h
+++ b/src/servers/app/Decorator.h
@@ -158,6 +158,7 @@ protected:
 								BRegion* updateRegion = NULL);
 
 	virtual	void			_GetFootprint(BRegion *region);
+			void			_InvalidateFootprint();
 
 			DrawingEngine*	fDrawingEngine;
 			DrawState		fDrawState;
diff --git a/src/servers/app/DefaultDecorator.cpp b/src/servers/app/DefaultDecorator.cpp
index 6856cc12bf..049687cfb4 100644
--- a/src/servers/app/DefaultDecorator.cpp
+++ b/src/servers/app/DefaultDecorator.cpp
@@ -775,6 +775,7 @@ DefaultDecorator::_FontsChanged(DesktopSettings& settings,
 	_InvalidateBitmaps();
 	_DoLayout();
 
+	_InvalidateFootprint();
 	if (updateRegion != NULL)
 		updateRegion->Include(&GetFootprint());
 }
@@ -796,6 +797,7 @@ DefaultDecorator::_SetLook(DesktopSettings& settings, window_look look,
 	_InvalidateBitmaps();
 	_DoLayout();
 
+	_InvalidateFootprint();
 	if (updateRegion != NULL)
 		updateRegion->Include(&GetFootprint());
 }
@@ -813,6 +815,7 @@ DefaultDecorator::_SetFlags(uint32 flags, BRegion* updateRegion)
 	fFlags = flags;
 	_DoLayout();
 
+	_InvalidateFootprint();
 	if (updateRegion != NULL)
 		updateRegion->Include(&GetFootprint());
 }