diff --git a/config.m4 b/config.m4
index ca499ab..f8e25a4 100644
--- a/config.m4
+++ b/config.m4
@@ -14,5 +14,5 @@ dnl Make sure that the comment is aligned:
 
 if test "$PHP_php_screw" != "no"; then
   dnl Action..
-  PHP_EXTENSION(php_screw_plus, $ext_shared)
+  PHP_NEW_EXTENSION(php_screw_plus, php_screw_plus.c, $ext_shared)
 fi