diff --git a/tests/guest-debug/test_gdbstub.py b/tests/guest-debug/test_gdbstub.py
index 7f71d34da1..46fbf98f0c 100644
--- a/tests/guest-debug/test_gdbstub.py
+++ b/tests/guest-debug/test_gdbstub.py
@@ -57,4 +57,4 @@ def main(test, expected_arch=None):
         pass
 
     print("All tests complete: {} failures".format(fail_count))
-    exit(fail_count)
+    gdb.execute(f"exit {fail_count}")