diff --git a/rtgui/lwbuttonset.cc b/rtgui/lwbuttonset.cc
index 1337c0ea5..99d3dce7c 100644
--- a/rtgui/lwbuttonset.cc
+++ b/rtgui/lwbuttonset.cc
@@ -53,7 +53,7 @@ void LWButtonSet::getMinimalDimensions (int& w, int& h)
 void LWButtonSet::arrangeButtons (int x, int y, int w, int h)
 {
 
-    if (x == ax && y == ay && w == aw && ((h == -1 && ah == 0) || h == ah )) {
+    if (x == ax && y == ay && w == aw && (h == -1 || h == ah )) {
         return;
     }