diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index 3f25beb8d..04bd40a4d 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -39,7 +39,7 @@ You will need to set COMPAT_313 to YES if you want R3.13 ioc
 applications or R3.13 extensions built with this R3.14 base.
 If you wish to build only R3.13 extensions and not R3.13 ioc
 applications with this R3.14 base, you can install scripts
-needed by the R3.13 build by doing a "gnumake COMPAT313=YES" 
+needed by the R3.13 build by doing a "gnumake COMPAT_313=YES" 
 in the <base>/config/tools directory.
 </p>