diff --git a/Zend/Zend.m4 b/Zend/Zend.m4
index 492185d2992..5bb9f36dff2 100644
--- a/Zend/Zend.m4
+++ b/Zend/Zend.m4
@@ -112,7 +112,7 @@ AC_ARG_ENABLE(experimental-zts,
   ZEND_EXPERIMENTAL_ZTS=no
 ])  
 
-AC_ARG_ENABLE(large-mem,
+AC_ARG_ENABLE(inline-optimization,
 [  --enable-inline-optimization   If you have much memory and are using
                                  gcc, you might try this.],[
   ZEND_INLINE_OPTIMIZATION=$enableval