diff --git a/kmk/kmk_keyboard.py b/kmk/kmk_keyboard.py
index dd9316845..7bdc74918 100644
--- a/kmk/kmk_keyboard.py
+++ b/kmk/kmk_keyboard.py
@@ -33,7 +33,20 @@ class Sandbox:
     active_layers = None
 
 
-class KMKKeyboard:
+class KMKKeyboard:    def __init__(
+        self,
+        keymap=[],
+        coord_mapping=None,
+        matrix=None,
+        modules=[],
+        extensions=[],
+    ):
+        self.keymap = keymap
+        self.coord_mapping = coord_mapping
+        self.matrix = matrix
+        self.modules = modules
+        self.extensions = extensions
+
     #####
     # User-configurable
     keymap = []