diff --git a/nn/base.py b/nn/base.py
index 7259768..f89eb2b 100644
--- a/nn/base.py
+++ b/nn/base.py
@@ -148,9 +148,9 @@ def __call__(self, *args, **kwargs):
   def variable_scope(self):
     """Returns the variable_scope declared by the module.
 
-    It is valid for library users to access the internal templated variable_scope,
-    but only makes sense to do so after connection. Therefore we raise an error
-    here if the variable_scope is requested before connection.
+    It is valid for library users to access the internal templated
+    variable_scope, but only makes sense to do so after connection. Therefore
+    we raise an error here if the variable_scope is requested before connection.
 
     The only case where it does make sense to access the variable_scope before
     connection is to get the post-uniquification name, which we support using
diff --git a/problems.py b/problems.py
index 6917646..40f0b92 100644
--- a/problems.py
+++ b/problems.py
@@ -134,7 +134,8 @@ def build():
 
 
 def _xent_loss(output, labels):
-  loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=output, labels=labels)
+  loss = tf.nn.sparse_softmax_cross_entropy_with_logits(logits=output,
+                                                        labels=labels)
   return tf.reduce_mean(loss)