diff --git a/keras/applications/mobilenet_v3.py b/keras/applications/mobilenet_v3.py
index ac61c9970e16..b79c4a663678 100644
--- a/keras/applications/mobilenet_v3.py
+++ b/keras/applications/mobilenet_v3.py
@@ -679,10 +679,10 @@ def preprocess_input(x, data_format=None):
 
     Args:
       x: A floating point `numpy.array` or a `tf.Tensor`.
-      data_format: Optional data format of the image tensor/array. Defaults to
-        None, in which case the global setting
-        `tf.keras.backend.image_data_format()` is used (unless you changed it,
-        it defaults to "channels_last").{mode}
+      data_format: Optional data format of the image tensor/array. `None` means
+        the global setting `tf.keras.backend.image_data_format()` is used
+        (unless you changed it, it uses "channels_last").
+        Defaults to `None`.
 
     Returns:
       Unchanged `numpy.array` or `tf.Tensor`.