3 files changed, 3 insertions, 5 deletions
diff --git a/python/helpers/pydev/pydev_ipython/inputhookglut.py b/python/helpers/pydev/pydev_ipython/inputhookglut.py
index e1e67e9930ed..477e48d3d22b 100644
--- a/python/helpers/pydev/pydev_ipython/inputhookglut.py
+++ b/python/helpers/pydev/pydev_ipython/inputhookglut.py
@@ -29,6 +29,7 @@ GLUT Inputhook support functions
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
+import os
 import sys
 from _pydev_imps import _pydev_time as time
 import signal
diff --git a/python/helpers/pydev/pydev_ipython/inputhookpyglet.py b/python/helpers/pydev/pydev_ipython/inputhookpyglet.py
index 64dd2e559545..94a8ac7adaba 100644
--- a/python/helpers/pydev/pydev_ipython/inputhookpyglet.py
+++ b/python/helpers/pydev/pydev_ipython/inputhookpyglet.py
@@ -20,6 +20,7 @@ Authors
 # Imports
 #-----------------------------------------------------------------------------
 
+import os
 import sys
 from _pydev_imps import _pydev_time as time
 from timeit import default_timer as clock
diff --git a/python/helpers/pydev/pydev_ipython/inputhookqt4.py b/python/helpers/pydev/pydev_ipython/inputhookqt4.py
index 27598fa742fe..b7e1cf0527a8 100644
--- a/python/helpers/pydev/pydev_ipython/inputhookqt4.py
+++ b/python/helpers/pydev/pydev_ipython/inputhookqt4.py
@@ -19,11 +19,7 @@ Author: Christian Boos
 import os
 import signal
 
-from pydevd_constants import USE_LIB_COPY
-if USE_LIB_COPY:
-    import _pydev_threading as threading
-else:
-    import threading
+import threading
 
 
 from pydev_ipython.qt_for_kernel import QtCore, QtGui