diff --git a/posix/JackFifo.h b/posix/JackFifo.h
index 8ac72591..8b0a8d78 100644
--- a/posix/JackFifo.h
+++ b/posix/JackFifo.h
@@ -44,7 +44,7 @@ class SERVER_EXPORT JackFifo : public detail::JackSynchro
 
     protected:
 
-        void BuildName(const char* name, const char* server_name, char* res);
+        void BuildName(const char* name, const char* server_name, char* res, int size);
 
     public: