diff --git a/runkit_sandbox.c b/runkit_sandbox.c
index 7b87e92..79cca1a 100644
--- a/runkit_sandbox.c
+++ b/runkit_sandbox.c
@@ -1612,7 +1612,7 @@ PHP_FUNCTION(runkit_sandbox_output_handler)
 	zval *sandbox;
 	zval *callback = NULL;
 	php_runkit_sandbox_object *objval;
-	char *name;
+	char *name = NULL;
 	int callback_is_true = 0;
 
 	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O|z", &sandbox, php_runkit_sandbox_class_entry, &callback) == FAILURE) {