diff --git a/rtdata/themes/TooWaBlue-GTK3-20_.css b/rtdata/themes/TooWaBlue-GTK3-20_.css
index deb46c87a..5006d1715 100644
--- a/rtdata/themes/TooWaBlue-GTK3-20_.css
+++ b/rtdata/themes/TooWaBlue-GTK3-20_.css
@@ -2,7 +2,7 @@
   This file is part of RawTherapee.
 
   Copyright (c) 2016-2017 TooWaBoo
-  Version 2.54 - requires RT 5.0 (Gtk+ >= 3.20)
+  Version 2.55 - requires RT 5.0 (Gtk+ >= 3.20)
 
   RawTherapee is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -1037,8 +1037,8 @@ window.csd:not(.fullscreen) #MainNotebook > header.top {
 
 #EditorTopPanel > box:nth-child(9) > button.image-button:not(:last-child) {
     min-width: 0;
-    padding-left: 0.33334em;
-    padding-right: 0.33334em;
+    padding-left: 0.25em;
+    padding-right: 0.25em;
 }
 
 #EditorTopPanel > box:nth-child(9) > button.image-button:last-child {