diff --git a/python/tank/util/qt_importer.py b/python/tank/util/qt_importer.py
index 90785e0b65..0284f02e8e 100644
--- a/python/tank/util/qt_importer.py
+++ b/python/tank/util/qt_importer.py
@@ -50,40 +50,42 @@ def __init__(self, interface_version_requested=QT4):
             self._qt_version_tuple,
         ) = self._import_modules(interface_version_requested)
 
+        self._modules = self._modules or {}
+
     @property
     def QtCore(self):
         """
         :returns: QtCore module, if available.
         """
-        return self._modules["QtCore"] if self._modules else None
+        return self._modules.get("QtCore")
 
     @property
     def QtGui(self):
         """
         :returns: QtGui module, if available.
         """
-        return self._modules["QtGui"] if self._modules else None
+        return self._modules.get("QtGui")
 
     @property
     def QtWebKit(self):
         """
         :returns: QtWebKit module, if available.
         """
-        return self._modules["QtWebKit"] if self._modules else None
+        return self._modules.get("QtWebKit")
 
     @property
     def QtNetwork(self):
         """
         :returns: QtNetwork module, if available.
         """
-        return self._modules["QtNetwork"] if self._modules else None
+        return self._modules.get("QtNetwork")
 
     @property
     def QtWebEngineWidgets(self):
         """
         :returns: QtWebEngineWidgets module, if available.
         """
-        return self._modules["QtWebEngineWidgets"] if self._modules else None
+        return self._modules.get("QtWebEngineWidgets")
 
     @property
     def binding(self):