diff --git a/tweakwcs/imalign.py b/tweakwcs/imalign.py
index 6394168..49372c8 100644
--- a/tweakwcs/imalign.py
+++ b/tweakwcs/imalign.py
@@ -336,8 +336,8 @@ def align_wcs(wcscat, refcat=None, ref_tpwcs=None, enforce_user_order=True,
         valid. Therefore, it is advisable verify that status is ``'SUCCESS'``
         before attempting to access other items, for example:
 
-        >>> fit_info = wcscat[0].meta.get('fit_info')  # noqa
-        >>> if fit_info['status'] == 'SUCCESS':
+        >>> fit_info = wcscat[0].meta.get('fit_info')  # noqa # doctest: +SKIP
+        >>> if fit_info['status'] == 'SUCCESS':  # doctest: +SKIP
         ...     print("shifts: [{}, {}]".format(*fit_info['shift']))
         ... else:
         ...     print("tweak info not available for this image")
diff --git a/tweakwcs/linearfit.py b/tweakwcs/linearfit.py
index 3b95e97..bb1eb8a 100644
--- a/tweakwcs/linearfit.py
+++ b/tweakwcs/linearfit.py
@@ -852,7 +852,7 @@ def build_fit_matrix(rot, scale=1):
 
 class _LevMarLSQFitter2x2(LMLSQFitter):
     """ Performs fits of 2D vector-models to 2D reference points. """
-    def objective_function(self, fps, *args):
+    def objective_function(self, fps, *args, **kwargs):
         model, weights, inputs, meas, *_ = args
         fitter_to_model_params(model, fps)
         if weights is None: