diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 630fe3cc0..bef227881 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -55,7 +55,7 @@ class Coder:
         main_model,
         edit_format,
         io,
-        skip_model_availabily_check,
+        skip_model_availabily_check=False,
         **kwargs,
     ):
         from . import EditBlockCoder, WholeFileCoder