diff --git a/scripts/gen_gpio_defaults.py b/scripts/gen_gpio_defaults.py
index a53ac887..a6e609fd 100755
--- a/scripts/gen_gpio_defaults.py
+++ b/scripts/gen_gpio_defaults.py
@@ -293,7 +293,7 @@ if __name__ == '__main__':
 
     if testmode:
         print('Test only:  Caravan layout:')
-    with open(magpath + '/caravan.mag', 'r') as ifile:
+    with open(caravel_path + '/mag/caravan.mag', 'r') as ifile:
         maglines = ifile.read().splitlines()
         outlines = []
         for magline in maglines: