diff --git a/python/plugins/processing/gui/ConfigDialog.py b/python/plugins/processing/gui/ConfigDialog.py
index d2776b7dca05..b01604198630 100644
--- a/python/plugins/processing/gui/ConfigDialog.py
+++ b/python/plugins/processing/gui/ConfigDialog.py
@@ -278,7 +278,6 @@ def accept(self):
                                             self.tr('Wrong value for parameter "%s":\n\n%s' % (setting.description, unicode(e))))
                         return
                 setting.save(qsettings)
-        Processing.updateAlgsList()
         settingsWatcher.settingsChanged.emit()
         updateMenus()
         QApplication.restoreOverrideCursor()
diff --git a/python/plugins/processing/modeler/ModelerDialog.py b/python/plugins/processing/modeler/ModelerDialog.py
index 4329493979cb..ec266ac5a3a6 100644
--- a/python/plugins/processing/modeler/ModelerDialog.py
+++ b/python/plugins/processing/modeler/ModelerDialog.py
@@ -144,6 +144,7 @@ def _mimeDataInput(items):
 
         def _mimeDataAlgorithm(items):
             item = items[0]
+            mimeData = None
             if isinstance(item, TreeAlgorithmItem):
                 mimeData = QMimeData()
                 mimeData.setText(item.alg.commandLineName())
diff --git a/python/testing/__init__.py b/python/testing/__init__.py
index defb3fadfbba..5eb885215f5d 100644
--- a/python/testing/__init__.py
+++ b/python/testing/__init__.py
@@ -31,7 +31,7 @@
 import functools
 
 from qgis.PyQt.QtCore import QVariant
-from qgis.core import QgsApplication, QgsFeatureRequest, QgsVectorLayer
+from qgis.core import QgsApplication, QgsFeatureRequest
 
 try:
     from nose2.compat import unittest
@@ -105,7 +105,7 @@ def assertLayersEqual(self, layer_expected, layer_result, **kwargs):
                 attr_result = feats[1][field_expected.name()]
                 field_result = [fld for fld in layer_expected.fields().toList() if fld.name() == field_expected.name()][0]
                 try:
-                    cmp = compare['fields'][field1.name()]
+                    cmp = compare['fields'][field_expected.name()]
                 except KeyError:
                     try:
                         cmp = compare['fields']['__all__']
@@ -225,6 +225,7 @@ def wrapper(*args, **kwargs):
 
         return realExpectedFailure
 
+
 # Patch unittest
 unittest.TestCase = TestCase
 unittest.expectedFailure = expectedFailure