diff --git a/volatility/framework/plugins/mac/check_syscall.py b/volatility/framework/plugins/mac/check_syscall.py
index 3a6077b8f..03085ead6 100644
--- a/volatility/framework/plugins/mac/check_syscall.py
+++ b/volatility/framework/plugins/mac/check_syscall.py
@@ -1,3 +1,6 @@
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
+#
 import logging
 from typing import List
 
diff --git a/volatility/framework/plugins/mac/check_sysctl.py b/volatility/framework/plugins/mac/check_sysctl.py
index 396466525..6e1dcb80c 100644
--- a/volatility/framework/plugins/mac/check_sysctl.py
+++ b/volatility/framework/plugins/mac/check_sysctl.py
@@ -1,3 +1,6 @@
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
+#
 import logging
 from typing import List
 
diff --git a/volatility/framework/plugins/mac/check_trap_table.py b/volatility/framework/plugins/mac/check_trap_table.py
index 99114de48..e8ab1fcf8 100644
--- a/volatility/framework/plugins/mac/check_trap_table.py
+++ b/volatility/framework/plugins/mac/check_trap_table.py
@@ -1,3 +1,7 @@
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
+#
+
 import logging
 from typing import List
 
diff --git a/volatility/framework/plugins/mac/lsof.py b/volatility/framework/plugins/mac/lsof.py
index 289a901d9..1973851c0 100644
--- a/volatility/framework/plugins/mac/lsof.py
+++ b/volatility/framework/plugins/mac/lsof.py
@@ -1,11 +1,13 @@
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
+#
+
 import logging
 
-from volatility.framework import exceptions, renderers
+from volatility.framework import renderers
 from volatility.framework.automagic import mac
 from volatility.framework.configuration import requirements
 from volatility.framework.interfaces import plugins
-from volatility.framework.objects import utility
-from volatility.framework.renderers import format_hints
 from volatility.plugins.mac import pslist
 
 vollog = logging.getLogger(__name__)
diff --git a/volatility/framework/plugins/mac/netstat.py b/volatility/framework/plugins/mac/netstat.py
index 8d5eab438..d01aaa9fa 100644
--- a/volatility/framework/plugins/mac/netstat.py
+++ b/volatility/framework/plugins/mac/netstat.py
@@ -1,3 +1,7 @@
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
+#
+
 import logging
 
 from volatility.framework import exceptions, renderers
diff --git a/volatility/framework/plugins/mac/proc_maps.py b/volatility/framework/plugins/mac/proc_maps.py
index 25f88c0b7..11e0ab2f0 100644
--- a/volatility/framework/plugins/mac/proc_maps.py
+++ b/volatility/framework/plugins/mac/proc_maps.py
@@ -1,32 +1,16 @@
-# This file was contributed to the Volatility Framework Version 3.
-# Copyright (C) 2018 Volatility Foundation.
-#
-# THE LICENSED WORK IS PROVIDED UNDER THE TERMS OF THE Volatility Contributors
-# Public License V1.0("LICENSE") AS FIRST COMPLETED BY: Volatility Foundation,
-# Inc. ANY USE, PUBLIC DISPLAY, PUBLIC PERFORMANCE, REPRODUCTION OR DISTRIBUTION
-# OF, OR PREPARATION OF SUBSEQUENT WORKS, DERIVATIVE WORKS OR DERIVED WORKS BASED
-# ON, THE LICENSED WORK CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS LICENSE AND ITS
-# TERMS, WHETHER OR NOT SUCH RECIPIENT READS THE TERMS OF THE LICENSE. "LICENSED
-# WORK,” “RECIPIENT" AND “DISTRIBUTOR" ARE DEFINED IN THE LICENSE. A COPY OF THE
-# LICENSE IS LOCATED IN THE TEXT FILE ENTITLED "LICENSE.txt" ACCOMPANYING THE
-# CONTENTS OF THIS FILE. IF A COPY OF THE LICENSE DOES NOT ACCOMPANY THIS FILE, A
-# COPY OF THE LICENSE MAY ALSO BE OBTAINED AT THE FOLLOWING WEB SITE:
-# https://www.volatilityfoundation.org/license/vcpl_v1.0
-#
-# Software distributed under the License is distributed on an "AS IS" basis,
-# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
-# specific language governing rights and limitations under the License.
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
 #
 
-import volatility.framework.interfaces.plugins as interfaces_plugins
-import volatility.framework.interfaces.renderers as interfaces_renderers
 import volatility.plugins.mac.pslist as pslist
-from volatility.framework import constants
+
+import volatility.framework.interfaces.plugins as interfaces_plugins
 from volatility.framework import renderers
 from volatility.framework.configuration import requirements
 from volatility.framework.objects import utility
 from volatility.framework.renderers import format_hints
 
+
 class Maps(interfaces_plugins.PluginInterface):
     """Lists process memory ranges that potentially contain injected code"""
 
@@ -48,8 +32,8 @@ class Maps(interfaces_plugins.PluginInterface):
                 if path == "":
                     path = vma.get_special_path()
 
-                yield (0, (process_pid, process_name, format_hints.Hex(vma.links.start), format_hints.Hex(vma.links.end),
-                           vma.get_perms(), path))
+                yield (0, (process_pid, process_name, format_hints.Hex(vma.links.start),
+                           format_hints.Hex(vma.links.end), vma.get_perms(), path))
 
     def run(self):
         filter_func = pslist.PsList.create_pid_filter([self.config.get('pid', None)])
diff --git a/volatility/framework/plugins/mac/tasks.py b/volatility/framework/plugins/mac/tasks.py
index cf5c3aeb3..4620ce125 100644
--- a/volatility/framework/plugins/mac/tasks.py
+++ b/volatility/framework/plugins/mac/tasks.py
@@ -1,36 +1,17 @@
-# This file was contributed to the Volatility Framework Version 3.
-# Copyright (C) 2018 Volatility Foundation.
-#
-# THE LICENSED WORK IS PROVIDED UNDER THE TERMS OF THE Volatility Contributors
-# Public License V1.0("LICENSE") AS FIRST COMPLETED BY: Volatility Foundation,
-# Inc. ANY USE, PUBLIC DISPLAY, PUBLIC PERFORMANCE, REPRODUCTION OR DISTRIBUTION
-# OF, OR PREPARATION OF SUBSEQUENT WORKS, DERIVATIVE WORKS OR DERIVED WORKS BASED
-# ON, THE LICENSED WORK CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS LICENSE AND ITS
-# TERMS, WHETHER OR NOT SUCH RECIPIENT READS THE TERMS OF THE LICENSE. "LICENSED
-# WORK,” “RECIPIENT" AND “DISTRIBUTOR" ARE DEFINED IN THE LICENSE. A COPY OF THE
-# LICENSE IS LOCATED IN THE TEXT FILE ENTITLED "LICENSE.txt" ACCOMPANYING THE
-# CONTENTS OF THIS FILE. IF A COPY OF THE LICENSE DOES NOT ACCOMPANY THIS FILE, A
-# COPY OF THE LICENSE MAY ALSO BE OBTAINED AT THE FOLLOWING WEB SITE:
-# https://www.volatilityfoundation.org/license/vcpl_v1.0
-#
-# Software distributed under the License is distributed on an "AS IS" basis,
-# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
-# specific language governing rights and limitations under the License.
+# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
+# which is available at https://www.volatilityfoundation.org/license/vsl_v1.0
 #
 
 import logging
-from typing import Callable, Iterable, List
+from typing import Callable, Iterable
 
-import volatility.framework.interfaces.plugins as interfaces_plugins
-from volatility.framework import renderers, interfaces, contexts, constants
+from volatility.framework import interfaces, contexts
 from volatility.framework.automagic import mac
-from volatility.framework.configuration import requirements
-from volatility.framework.objects import utility
-
 from volatility.plugins.mac import pslist
 
 vollog = logging.getLogger(__name__)
 
+
 class Tasks(pslist.PsList):
     """Lists the processes present in a particular mac memory image"""
 
@@ -58,11 +39,9 @@ class Tasks(pslist.PsList):
                 seen[task.vol.offset] = 1
 
             proc = task.bsd_info.dereference().cast("proc")
-    
+
             if not context.layers[layer_name].is_valid(proc.vol.offset):
                 break
 
             if not filter_func(proc):
                 yield proc
-
-