diff --git a/tensorflow/g3doc/api_docs/python/functions_and_classes/shard2/tf.matmul.md b/tensorflow/g3doc/api_docs/python/functions_and_classes/shard2/tf.matmul.md
index d20ff3a5bade72..1c8571247cc2de 100644
--- a/tensorflow/g3doc/api_docs/python/functions_and_classes/shard2/tf.matmul.md
+++ b/tensorflow/g3doc/api_docs/python/functions_and_classes/shard2/tf.matmul.md
@@ -73,7 +73,11 @@ c = tf.matmul(a, b) => [[[ 94 100]
   the product of the corresponding matrices in `a` and `b, e.g. if all
   transpose or adjoint attributes are `False`:
 
-  output[..., :, :] = a[..., :, :] * b[..., :, :] ,
+  `output`[..., i, j] = sum_k (`a`[..., i, k] * `b`[..., k, j]),
+  for all indices i, j.
+
+
+*  <b>`Note`</b>: This is matrix product, not element-wise product.
 
 
 ##### Raises:
diff --git a/tensorflow/g3doc/api_docs/python/math_ops.md b/tensorflow/g3doc/api_docs/python/math_ops.md
index f747383c071c71..830220ed616f28 100644
--- a/tensorflow/g3doc/api_docs/python/math_ops.md
+++ b/tensorflow/g3doc/api_docs/python/math_ops.md
@@ -1674,7 +1674,11 @@ c = tf.matmul(a, b) => [[[ 94 100]
   the product of the corresponding matrices in `a` and `b, e.g. if all
   transpose or adjoint attributes are `False`:
 
-  output[..., :, :] = a[..., :, :] * b[..., :, :] ,
+  `output`[..., i, j] = sum_k (`a`[..., i, k] * `b`[..., k, j]),
+  for all indices i, j.
+
+
+*  <b>`Note`</b>: This is matrix product, not element-wise product.
 
 
 ##### Raises: