diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 7ef778e2795..0f6aedd9d1c 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -938,7 +938,7 @@ static PHP_MINIT_FUNCTION(zlib)
 	REGISTER_LONG_CONSTANT("ZLIB_ENCODING_GZIP", PHP_ZLIB_ENCODING_GZIP, CONST_CS|CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("ZLIB_ENCODING_DEFLATE", PHP_ZLIB_ENCODING_DEFLATE, CONST_CS|CONST_PERSISTENT);
 	REGISTER_INI_ENTRIES();
-
+	ZLIBG(ob_gzhandler) = NULL;
 	return SUCCESS;
 }
 /* }}} */