diff --git a/Zend/zend_language_scanner.l b/Zend/zend_language_scanner.l
index e84874c0048..16fd9efa6cb 100644
--- a/Zend/zend_language_scanner.l
+++ b/Zend/zend_language_scanner.l
@@ -124,6 +124,8 @@ void startup_scanner(TSRMLS_D)
 {
 	CG(heredoc) = NULL;
 	CG(heredoc_len)=0;
+	CG(doc_comment) = NULL;
+	CG(doc_comment_len) = 0;
 	SCNG(yy_start_stack_ptr) = 0;
 	SCNG(yy_start_stack_depth) = 0;
 }