diff --git a/src/timew.h b/src/timew.h
index ce23598f..2b92f17d 100644
--- a/src/timew.h
+++ b/src/timew.h
@@ -40,4 +40,7 @@ void initializeRules (Configuration&, Rules&, Log&);
 void initializeExtensions (Configuration&, Extensions&, Log&);
 int dispatchCommand (int, const char**, Configuration&, Database&, Rules&, Extensions&, Log&);
 
+// utiŀ.cpp
+std::string osName ();
+
 #endif