fix typo

tomwer/gui/conditions/filter.py

@@ -84,7 +84,7 @@ class FileNameFilterWidget(filter.FileNameFilter, qt.QWidget):
         self.sandboxDialog = None
 
         # signal/SLOT connection
-        if sys.version_info[0] < 3:
+        if qt.BINDING in ('PyQt4', 'PySide'):
             self._filterTypeCB.currentIndexChanged[str].connect(self.setActiveFilter)
         else:
             self._filterTypeCB.currentTextChanged[str].connect(self.setActiveFilter)