1 files changed, 1 insertions, 1 deletions
diff --git a/src/server/shared/Threading/Callback.h b/src/server/shared/Threading/Callback.h
index d0c80efb00a..1f4ffc97cfc 100644
--- a/src/server/shared/Threading/Callback.h
+++ b/src/server/shared/Threading/Callback.h
@@ -97,7 +97,7 @@ class QueryCallback
         //! Resets all underlying variables (param, result and stage)
         void Reset()
         {
-            SetParam(NULL);
+            SetParam(ParamType());
             FreeResult();
             ResetStage();
         }