diff --git a/ports/run/noux.run b/ports/run/noux.run
index f881a82e8..e342949ff 100644
--- a/ports/run/noux.run
+++ b/ports/run/noux.run
@@ -70,7 +70,7 @@ if {[have_spec x86_64]} {
         append qemu_args " -m 300 "
 }
 
-run_genode_until "child exited with exit value 0.*\n" 30
+run_genode_until "child /bin/ls exited with exit value 0.*\n" 30
 
 puts "[exec cat $noux_output_file]"