diff --git a/ext/overload/config.m4 b/ext/overload/config.m4
index be0576ca289..67be7da0aec 100644
--- a/ext/overload/config.m4
+++ b/ext/overload/config.m4
@@ -1,11 +1,16 @@
 dnl
 dnl $Id$
 dnl
-
 PHP_ARG_ENABLE(overload,whether to enable user-space object overloading support,
 [  --disable-overload      Disable user-space object overloading support.], yes)
 
+
 if test "$PHP_OVERLOAD" != "no"; then
-	AC_DEFINE(HAVE_OVERLOAD, 1, [ ])
-	PHP_NEW_EXTENSION(overload, overload.c, $ext_shared)
+	AC_CHECK_FILE([Zend/zend_objects.h], [
+		AC_MSG_CHECKING(for overload)
+		AC_MSG_RESULT(not needed with ZendEngine 2)
+	], [
+		AC_DEFINE(HAVE_OVERLOAD, 1, [ ])
+		PHP_NEW_EXTENSION(overload, overload.c, $ext_shared)
+	])
 fi