diff --git a/src/main/python/keyboard.py b/src/main/python/keyboard.py
index 9b9dcc9..863344a 100644
--- a/src/main/python/keyboard.py
+++ b/src/main/python/keyboard.py
@@ -102,7 +102,7 @@ class Keyboard:
         """ Serializes current layout to a binary """
 
         # TODO: increase version before release
-        data = {"version": "0"}
+        data = {"version": 0}
         layout = []
         for l in range(self.layers):
             layer = []