diff --git a/Contrib/InstallOptions/Readme.html b/Contrib/InstallOptions/Readme.html
index a2894393..a604559c 100644
--- a/Contrib/InstallOptions/Readme.html
+++ b/Contrib/InstallOptions/Readme.html
@@ -749,7 +749,7 @@ has failed:</p>
 Function ValidateCustom
 
   ReadINIStr $R0 "$PLUGINSDIR\test.ini" "Field 1" "State"
-  StrCmp $0 "" 0 +3
+  StrCmp $R0 "" 0 +3
     MessageBox MB_ICONEXCLAMATION|MB_OK "Please enter your name."
     Abort