diff --git a/gpiozero/cli/pinout.py b/gpiozero/cli/pinout.py
index 8c60322..8e652dc 100644
--- a/gpiozero/cli/pinout.py
+++ b/gpiozero/cli/pinout.py
@@ -56,7 +56,7 @@ def main():
         try:
             pi_info().pprint(color=args.color)
         except IOError:
-            print('This device is not an Raspberry Pi?')
+            print('This device is not a Raspberry Pi?')
             exit(2)
     else:
         pi_info(args.revision).pprint(color=args.color)