diff --git a/Contrib/Modern UI/System.nsh b/Contrib/Modern UI/System.nsh
index 780e6610..9c6e106e 100644
--- a/Contrib/Modern UI/System.nsh	
+++ b/Contrib/Modern UI/System.nsh	
@@ -1449,9 +1449,9 @@
 
 !macroend
 
-!macro MUI_LANGUAGEFILE_NSISCOMMAND_MULTIPARAMETER COMMAND NAME
+!macro MUI_LANGUAGEFILE_NSISCOMMAND_MULTIPARAMETER COMMAND NAME VALUE
 
-  "${COMMAND}" "${${NAME}}"
+  "${COMMAND}" ${VALUE}
   !undef "${NAME}"
 
 !macroend
@@ -1544,7 +1544,7 @@
   
   !ifdef MUI_FINISHPAGE
     !insertmacro MUI_LANGUAGEFILE_LANGSTRING "MUI_TEXT_FINISH_WINDOWTITLE"
-    !insertmacro MUI_LANGUAGEFILE_NSISCOMMAND_MULTIPARAMETER "MiscButtonText" "MUI_TEXT_FINISH_BUTTON" '"" "" ""'
+    !insertmacro MUI_LANGUAGEFILE_NSISCOMMAND_MULTIPARAMETER "MiscButtonText" "MUI_TEXT_FINISH_BUTTON" '"" "" "" "${MUI_TEXT_FINISH_BUTTON}"'
     !ifndef MUI_TEXT_FINISH_INFO_TITLE
       LangString "MUI_TEXT_FINISH_INFO_TITLE" 0 "${MUI_TEXT_FINISH_TITLE}"
       !undef MUI_TEXT_FINISH_TITLE