diff --git a/paddle/fluid/framework/ir/node.cc b/paddle/fluid/framework/ir/node.cc
index d2f729afc4870ce0fd464b849bf194a6497e3b28..94bf8cb10b2d0ab0d7cd5d89cd9aa75072314496 100644
--- a/paddle/fluid/framework/ir/node.cc
+++ b/paddle/fluid/framework/ir/node.cc
@@ -17,8 +17,9 @@ limitations under the License. */
 namespace paddle {
 namespace framework {
 namespace ir {
+// msvc15 don't support constexpr in correct way.
 #if !defined(_WIN32)
-constexpr char Node::kControlDepVarName[] =  "__control_var";
+constexpr char Node::kControlDepVarName[];
 #else
 const char Node::kControlDepVarName[] = "__control_var";
 #endif