diff --git a/lib/arch/CArchMultithreadPosix.cpp b/lib/arch/CArchMultithreadPosix.cpp
index 26bb0f5a..b3b2eeba 100644
--- a/lib/arch/CArchMultithreadPosix.cpp
+++ b/lib/arch/CArchMultithreadPosix.cpp
@@ -828,4 +828,6 @@ CArchMultithreadPosix::threadSignalHandler(void*)
 			break;
 		}
 	}
+
+	return NULL;
 }