diff --git a/lib/cpp/src/Thrift.h b/lib/cpp/src/Thrift.h
index 89b37d0..6174d46 100644
--- a/lib/cpp/src/Thrift.h
+++ b/lib/cpp/src/Thrift.h
@@ -32,7 +32,7 @@
   }
 
 private:
-  const std::string message_;
+  std::string message_;
 
 };