diff --git a/src/ucp/core/ucp_request.inl b/src/ucp/core/ucp_request.inl
index d10b673a683..06c90d5c855 100644
--- a/src/ucp/core/ucp_request.inl
+++ b/src/ucp/core/ucp_request.inl
@@ -132,7 +132,7 @@ UCS_PTR_MAP_IMPL(request, 0);
 
 #define ucp_request_cb_param(_param, _req, _cb, ...) \
     if ((_param)->op_attr_mask & UCP_OP_ATTR_FIELD_CALLBACK) { \
-        (_param)->cb._cb(req + 1, (_req)->status, ##__VA_ARGS__, \
+        (_param)->cb._cb((_req) + 1, (_req)->status, ##__VA_ARGS__, \
                          (_param)->user_data); \
     }