diff --git a/examples/create_postcards_from_csv/create_postcards_from_csv.py b/examples/create_postcards_from_csv/create_postcards_from_csv.py
index cc5e1ff..27b04c1 100644
--- a/examples/create_postcards_from_csv/create_postcards_from_csv.py
+++ b/examples/create_postcards_from_csv/create_postcards_from_csv.py
@@ -37,7 +37,7 @@
                         'address_zip': '94185',
                         'address_country': 'US'
                     },
-                    size: '6x11',
+                    size = '6x11',
                     front = frontHtml,
                     back = backHtml,
                     data = {