diff --git a/src/core/ngx_rbtree.c b/src/core/ngx_rbtree.c
index 969d549..377b82f 100644
--- a/src/core/ngx_rbtree.c
+++ b/src/core/ngx_rbtree.c
@@ -174,12 +174,7 @@ ngx_rbtree_delete(ngx_rbtree_t *tree, ngx_rbtree_node_t *node)
 
     } else {
         subst = ngx_rbtree_min(node->right, sentinel);
-
-        if (subst->left != sentinel) {
-            temp = subst->left;
-        } else {
-            temp = subst->right;
-        }
+        temp = subst->right;
     }
 
     if (subst == *root) {