diff --git a/paddle/fluid/framework/ir/graph.h b/paddle/fluid/framework/ir/graph.h
index 8bb3c27bdd32d07d58913db043569f6a3bf69aeb..feb3330176490e71c51cce826fe49d5499469ad7 100644
--- a/paddle/fluid/framework/ir/graph.h
+++ b/paddle/fluid/framework/ir/graph.h
@@ -141,7 +141,8 @@ class Graph {
   ir::Node *CreateControlDepVar() {
     // TODO(panyx0718): control var name should be really unique.
     const std::string name = string::Sprintf(
-        "%s@%llu", ir::Node::kControlDepVarName, node_set_.size());
+        "%s@%llu", static_cast<const char *>(ir::Node::kControlDepVarName),
+        num_node_created_);
     auto *x = AddNode(new ir::Node(name, ir::Node::Type::kVariable));
     x->SetId(num_node_created_++);
     return x;