diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py
index 1bb6533f33..6d136c5012 100644
--- a/src/calibre/__init__.py
+++ b/src/calibre/__init__.py
@@ -5,7 +5,6 @@ __docformat__ = 'restructuredtext en'
 
 import sys, os, re, time, random, __builtin__, warnings
 __builtin__.__dict__['dynamic_property'] = lambda func: func(None)
-sys.path.insert(0, os.environ.get('PYQT5_IMPORT_PATH', '/opt/pyqt5/lib'))  # QT5XX: Remove this after migration complete
 from math import floor
 from functools import partial