diff --git a/ext/fileinfo/fileinfo.c b/ext/fileinfo/fileinfo.c
index 4d3b754a460..1ddc9ca3a10 100644
--- a/ext/fileinfo/fileinfo.c
+++ b/ext/fileinfo/fileinfo.c
@@ -103,7 +103,7 @@ PHP_FILEINFO_API zend_object_value finfo_objects_new(zend_class_entry *class_typ
 	intern = ecalloc(1, sizeof(struct finfo_object));
 	intern->zo.ce = class_type;
 	intern->zo.properties = NULL;
-	intern->std.guards = NULL;
+	intern->zo.guards = NULL;
 	intern->ptr = NULL;
 
 	retval.handle = zend_objects_store_put(intern, finfo_objects_dtor, NULL, NULL TSRMLS_CC);