diff --git a/src/core/impl/system.cpp b/src/core/impl/system.cpp
index 7e3cbe44..d970e9cf 100644
--- a/src/core/impl/system.cpp
+++ b/src/core/impl/system.cpp
@@ -488,7 +488,7 @@ class TimedFuncInvokerImpl final: public TimedFuncInvoker {
             return iter->second.direct_call(param);
 
         if (!m_fork_exec_impl) {
-            mgb_log_error("timeout is set, but no fork_exec_impl not given; "
+            mgb_log_warn("timeout is set, but no fork_exec_impl not given; "
                     "timeout would be ignored");
             return iter->second.direct_call(param);
         }