diff --git a/regparse.c b/regparse.c
index 499e94e751..440cb5e637 100644
--- a/regparse.c
+++ b/regparse.c
@@ -5825,7 +5825,6 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
   Node* tmp = NULL;
   Node* np1 = NULL;
   Node* top_alt = NULL;
-  BBuf *pbuf1 = NULL;
   int r = 0;
   int num1;
   int i;
@@ -6054,7 +6053,6 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env)
 
  err:
   onig_node_free(np1);
-  bbuf_free(pbuf1);
   for (i=0; i<NODE_COMMON_SIZE; i++)
     onig_node_free(node_common[i]);
   return (r == 0) ? ONIGERR_MEMORY : r;