diff --git a/doc/manual/source/the-model-file.rst b/doc/manual/source/the-model-file.rst
index 4eee8396bf10d19f3c0e2ed78e5eaa8c28b30889..d6c5e386fb50d623826dddc0df064d110c188489 100644
--- a/doc/manual/source/the-model-file.rst
+++ b/doc/manual/source/the-model-file.rst
@@ -3896,7 +3896,7 @@ speed-up on large models.
        ``homotopy_marginal_linearization_fallback`` option. It is typically
        used in situations where it is known that homotopy will fail to go
        beyond a certain point, so as to save computing time, while at the same
-       time getting an approximate solution.
+       time getting an approximate solution. Default: ``1``.
 
     .. option:: homotopy_exclude_varexo = (VARIABLE_NAME...)