diff --git a/repos/os/src/test/signal/main.cc b/repos/os/src/test/signal/main.cc
index 4e16765ada..88769a2399 100644
--- a/repos/os/src/test/signal/main.cc
+++ b/repos/os/src/test/signal/main.cc
@@ -693,6 +693,7 @@ struct Main
 	{
 		test_8.destruct();
 		log("--- Signalling test finished ---");
+		env.parent().exit(0);
 	}
 
 	Main(Env &env) : env(env)