diff --git a/tensorflow/python/ops/gradients_impl.py b/tensorflow/python/ops/gradients_impl.py
index 6fecaa927dd..954783adb5c 100644
--- a/tensorflow/python/ops/gradients_impl.py
+++ b/tensorflow/python/ops/gradients_impl.py
@@ -102,7 +102,7 @@ def gradients(ys,
 
   `unconnected_gradients` determines the value returned for each x in xs if it
   is unconnected in the graph to ys. By default this is None to safeguard
-  against errors. MAthematically these gradients are zero which can be requested
+  against errors. Mathematically these gradients are zero which can be requested
   using the `'zero'` option. `tf.UnconnectedGradients` provides the
   following options and behaviors: