diff --git a/python/fbprophet/forecaster.py b/python/fbprophet/forecaster.py
index 7ed57c3..173ac3b 100644
--- a/python/fbprophet/forecaster.py
+++ b/python/fbprophet/forecaster.py
@@ -1048,6 +1048,7 @@ class Prophet(object):
                 params = model.optimizing(
                     dat, init=stan_init, iter=1e4, **kwargs)
             except RuntimeError:
+                kwargs.pop('algorithm', None)
                 params = model.optimizing(
                     dat, init=stan_init, iter=1e4, algorithm='Newton',
                     **kwargs