diff --git a/paddle/framework/data_type.h b/paddle/framework/data_type.h
index 55e3931f870d62dcaddc6c067f66999c59e2a262..649899d42572c9a22adca5337dcd56b0bcf42e7c 100644
--- a/paddle/framework/data_type.h
+++ b/paddle/framework/data_type.h
@@ -28,7 +28,6 @@ inline DataType ToDataType(std::type_index type) {
     return DataType::INT32;
   } else {
     PADDLE_THROW("Not supported");
-    return static_cast<DataType>(-1);
   }
 }