diff --git a/Contrib/Modern UI/Readme.html b/Contrib/Modern UI/Readme.html
index 7cb1a6c1..e449beb9 100644
--- a/Contrib/Modern UI/Readme.html	
+++ b/Contrib/Modern UI/Readme.html	
@@ -1020,7 +1020,7 @@ LangString PAGE_TITLE ${LANG_ENGLISH} "Title"
 LangString PAGE_SUBTITLE ${LANG_ENGLISH} "Subtitle"
 
 Function CustomPageFunction
-  !insermacro MUI_HEADER_TEXT $(PAGE_TITLE) $(PAGE_SUBTITLE)
+  !insertmacro MUI_HEADER_TEXT $(PAGE_TITLE) $(PAGE_SUBTITLE)
   !insertmacro MUI_INSTALLOPTIONS_DISPLAY "ioFile.ini"
 FuctionEnd
 </pre>