diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index 1661b034e52..2be9c5979d8 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -87,6 +87,7 @@ struct ExecutionContext {
     Values = std::move(O.Values);
     VarArgs = std::move(O.VarArgs);
     Allocas = std::move(O.Allocas);
+    return *this;
   }
 };