diff --git a/docker/api/container.py b/docker/api/container.py
index 9a25b2148..fef760300 100644
--- a/docker/api/container.py
+++ b/docker/api/container.py
@@ -678,7 +678,8 @@ def diff(self, container):
             container (str): The container to diff
 
         Returns:
-            (str)
+            (list) A list of dictionaries containing the attributes `Path`
+                and `Kind`.
 
         Raises:
             :py:class:`docker.errors.APIError`
diff --git a/docker/models/containers.py b/docker/models/containers.py
index f451cf3fe..2eeefda1e 100644
--- a/docker/models/containers.py
+++ b/docker/models/containers.py
@@ -141,7 +141,8 @@ def diff(self):
         Inspect changes on a container's filesystem.
 
         Returns:
-            (str)
+            (list) A list of dictionaries containing the attributes `Path`
+                and `Kind`.
 
         Raises:
             :py:class:`docker.errors.APIError`