diff --git a/plugins/modules/docker_container_copy_into.py b/plugins/modules/docker_container_copy_into.py
index d7aa9ba1..7d2a144e 100644
--- a/plugins/modules/docker_container_copy_into.py
+++ b/plugins/modules/docker_container_copy_into.py
@@ -848,9 +848,9 @@ def main():
             elif mode_parse == 'octal_string_only':
                 mode = parse_octal_string_only(mode)
         except (TypeError, ValueError) as e:
-            module.fail_json(msg="Error while parsing 'mode': {error}".format(error=e))
+            client.fail("Error while parsing 'mode': {error}".format(error=e))
         if mode < 0:
-            module.fail_json(msg="'mode' must not be negative; got {mode}".format(mode=mode))
+            client.fail("'mode' must not be negative; got {mode}".format(mode=mode))
 
     if content is not None:
         if client.module.params['content_is_b64']:
diff --git a/tests/sanity/ignore-2.15.txt b/tests/sanity/ignore-2.15.txt
index 14ec3dfd..0a0b790b 100644
--- a/tests/sanity/ignore-2.15.txt
+++ b/tests/sanity/ignore-2.15.txt
@@ -2,5 +2,6 @@
 plugins/inventory/docker_containers.py yamllint:unparsable-with-libyaml
 plugins/inventory/docker_machine.py yamllint:unparsable-with-libyaml
 plugins/inventory/docker_swarm.py yamllint:unparsable-with-libyaml
+plugins/modules/docker_container_copy_into.py validate-modules:invalid-documentation
 plugins/modules/docker_container_copy_into.py validate-modules:undocumented-parameter # _max_file_size_for_diff is used by the action plugin
 plugins/modules/docker_image_build.py validate-modules:invalid-documentation
diff --git a/tests/sanity/ignore-2.16.txt b/tests/sanity/ignore-2.16.txt
index 82720e59..e50c576e 100644
--- a/tests/sanity/ignore-2.16.txt
+++ b/tests/sanity/ignore-2.16.txt
@@ -1,5 +1,6 @@
 plugins/inventory/docker_containers.py yamllint:unparsable-with-libyaml
 plugins/inventory/docker_machine.py yamllint:unparsable-with-libyaml
 plugins/inventory/docker_swarm.py yamllint:unparsable-with-libyaml
+plugins/modules/docker_container_copy_into.py validate-modules:invalid-documentation
 plugins/modules/docker_container_copy_into.py validate-modules:undocumented-parameter # _max_file_size_for_diff is used by the action plugin
 plugins/modules/docker_image_build.py validate-modules:invalid-documentation
diff --git a/tests/unit/plugins/modules/test_docker_container_copy_into.py b/tests/unit/plugins/modules/test_docker_container_copy_into.py
index b1dcd727..dfbf5983 100644
--- a/tests/unit/plugins/modules/test_docker_container_copy_into.py
+++ b/tests/unit/plugins/modules/test_docker_container_copy_into.py
@@ -39,7 +39,7 @@ def test_parse_string(input, expected):
 ])
 def test_parse_int(input):
     assert parse_modern(input) == input
-    with pytest.raises(TypeError, match="^must be an octal string, got {value}$".format(value=input)):
+    with pytest.raises(TypeError, match="^must be an octal string, got {value}L?$".format(value=input)):
         parse_octal_string_only(input)