diff --git a/os/run/thread_join.run b/os/run/thread_join.run
index 56439e1e7..9d6836b70 100644
--- a/os/run/thread_join.run
+++ b/os/run/thread_join.run
@@ -34,6 +34,6 @@ build_boot_image "core init timer test-thread_join"
 
 append qemu_args "-nographic -m 64"
 
-run_genode_until {child exited with exit value 0.*} 10
+run_genode_until {child exited with exit value 0.*\n} 10
 
 puts "Test succeeded"