The signatures need to match.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qmp/qmp-shell | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/qmp/qmp-shell b/scripts/qmp/qmp-shell
index 62a6377e06..18bf49bb26 100755
--- a/scripts/qmp/qmp-shell
+++ b/scripts/qmp/qmp-shell
@@ -389,8 +389,8 @@ class HMPShell(QMPShell):
             print('%s: %s' % (resp['error']['class'], resp['error']['desc']))
         return True
 
-    def show_banner(self):
-        QMPShell.show_banner(self, msg='Welcome to the HMP shell!')
+    def show_banner(self, msg='Welcome to the HMP shell!'):
+        QMPShell.show_banner(self, msg)
 
 
 def die(msg):
-- 
2.31.1