diff --git a/testing/mozbase/mozprocess/mozprocess/__init__.py b/testing/mozbase/mozprocess/mozprocess/__init__.py
index 6f4ae4945077..a2991604b8e5 100644
--- a/testing/mozbase/mozprocess/mozprocess/__init__.py
+++ b/testing/mozbase/mozprocess/mozprocess/__init__.py
@@ -2,4 +2,6 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
-from processhandler import *
+from __future__ import absolute_import
+
+from .processhandler import *
diff --git a/testing/mozbase/mozprocess/mozprocess/pid.py b/testing/mozbase/mozprocess/mozprocess/pid.py
index 6a1694bfbc49..06b73ccbeda1 100755
--- a/testing/mozbase/mozprocess/mozprocess/pid.py
+++ b/testing/mozbase/mozprocess/mozprocess/pid.py
@@ -4,7 +4,8 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
-import os
+from __future__ import absolute_import
+
 import mozinfo
 import shlex
 import subprocess
diff --git a/testing/mozbase/mozprocess/mozprocess/processhandler.py b/testing/mozbase/mozprocess/mozprocess/processhandler.py
index 8268e67208d6..ba1fa7ee5f34 100644
--- a/testing/mozbase/mozprocess/mozprocess/processhandler.py
+++ b/testing/mozbase/mozprocess/mozprocess/processhandler.py
@@ -2,9 +2,9 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
+from __future__ import absolute_import
+
 import os
-import re
-import select
 import signal
 import subprocess
 import sys
diff --git a/testing/mozbase/mozprocess/mozprocess/qijo.py b/testing/mozbase/mozprocess/mozprocess/qijo.py
index 1ac88430ce3c..2e9236d55609 100644
--- a/testing/mozbase/mozprocess/mozprocess/qijo.py
+++ b/testing/mozbase/mozprocess/mozprocess/qijo.py
@@ -2,6 +2,8 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
+from __future__ import absolute_import
+
 from ctypes import c_void_p, POINTER, sizeof, Structure, windll, WinError, WINFUNCTYPE, addressof, c_size_t, c_ulong
 from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LARGE_INTEGER
 
diff --git a/testing/mozbase/mozprocess/mozprocess/winprocess.py b/testing/mozbase/mozprocess/mozprocess/winprocess.py
index 6f3afc8de32a..c345125c3f92 100644
--- a/testing/mozbase/mozprocess/mozprocess/winprocess.py
+++ b/testing/mozbase/mozprocess/mozprocess/winprocess.py
@@ -34,9 +34,11 @@
 # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 # WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-from ctypes import c_void_p, POINTER, sizeof, Structure, Union, windll, WinError, WINFUNCTYPE, c_ulong
-from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LPCWSTR, LPWSTR, UINT, WORD, ULONG
-from qijo import QueryInformationJobObject
+from __future__ import mozprocess
+
+from ctypes import c_void_p, POINTER, sizeof, Structure, windll, WinError, WINFUNCTYPE, c_ulong
+from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LPCWSTR, LPWSTR, UINT, WORD
+from .qijo import QueryInformationJobObject
 
 LPVOID = c_void_p
 LPBYTE = POINTER(BYTE)
diff --git a/testing/mozbase/mozprocess/mozprocess/wpk.py b/testing/mozbase/mozprocess/mozprocess/wpk.py
index 8c142864b99f..5d707c2e7b7d 100644
--- a/testing/mozbase/mozprocess/mozprocess/wpk.py
+++ b/testing/mozbase/mozprocess/mozprocess/wpk.py
@@ -2,6 +2,8 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
+from __future__ import absolute_import
+
 from ctypes import sizeof, windll, addressof, create_unicode_buffer
 from ctypes.wintypes import DWORD, HANDLE