diff --git a/Contrib/Modern UI/Readme.html b/Contrib/Modern UI/Readme.html
index 591b45d8..0ea99483 100644
--- a/Contrib/Modern UI/Readme.html	
+++ b/Contrib/Modern UI/Readme.html	
@@ -248,6 +248,8 @@ follow these steps:</p>
   Bitmap for the Welcome and Finish page.</p>
   <p class="text"><span class="bold">MUI_BGCOLOR</span> <i>(0xFFFFFF)</i><br />
   Background color for the header, Welcome page and Finish page, hexadecimal. (0xBBGGRR)</p>
+  <p class="text"><span class="bold">MUI_RTL_UI</span> <i>(not defined)</i><br />
+  Right-to-left interface.</p>
   <p class="subheader">6. Define custom functions (optional)</p>
   <p class="text">If you want add your own code to functions inserted by the
   Modern UI, such as the .onGUIInit function and the Page function, create your
diff --git a/Contrib/Modern UI/System.nsh b/Contrib/Modern UI/System.nsh
index bc753693..55c00b59 100644
--- a/Contrib/Modern UI/System.nsh	
+++ b/Contrib/Modern UI/System.nsh	
@@ -107,7 +107,11 @@
 
   XPStyle On
 
-  ChangeUI all "${MUI_UI}"
+  !ifndef MUI_RTL_UI
+	ChangeUI all "${MUI_UI}"
+  !else
+    ChangeUI /RTL all "${MUI_UI}"
+  !endif
   Icon "${MUI_ICON}"
   
   !ifdef MUI_UNINSTALLER
diff --git a/TODO.txt b/TODO.txt
index 8070fb5d..d6990b83 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -46,6 +46,8 @@ OTHER PLUGINS
 
 NSIS
 
+* ChangeUI RTL support
+
 * LZMA compression
 
 * multiple directory pages