diff --git a/Qt.py b/Qt.py
index b5c2b431..4157a09b 100644
--- a/Qt.py
+++ b/Qt.py
@@ -26,6 +26,7 @@
 
 def _pyqt5():
     import PyQt5.Qt
+    from PyQt5 import QtWidgets
 
     # Remap
     PyQt5.QtCore.Signal = PyQt5.QtCore.pyqtSignal
@@ -39,6 +40,16 @@ def _pyqt5():
     PyQt5.__qt_version__ = PyQt5.QtCore.QT_VERSION_STR
     PyQt5.load_ui = pyqt5_load_ui
 
+    # provide mocked UnicodeUTF8 For backward compatibility
+    QtWidgets.QApplication.UnicodeUTF8 = -1
+
+    old_translate_fn = QtWidgets.QApplication.translate
+
+    def translate(context, key, disambiguation=None, encoding=None, n=0):
+        return old_translate_fn(context, key, disambiguation, n)
+
+    QtWidgets.QApplication.translate = staticmethod(translate)
+
     return PyQt5
 
 
@@ -89,7 +100,7 @@ def _pyqt4():
 
 def _pyside2():
     import PySide2
-    from PySide2 import QtGui, QtCore
+    from PySide2 import QtGui, QtCore, QtWidgets
 
     # Remap
     QtCore.QStringListModel = QtGui.QStringListModel
@@ -101,6 +112,16 @@ def _pyside2():
     PySide2.__qt_version__ = PySide2.QtCore.qVersion()
     PySide2.load_ui = pyside2_load_ui
 
+    # provide mocked UnicodeUTF8 For backward compatibility
+    QtWidgets.QApplication.UnicodeUTF8 = -1
+
+    old_translate_fn = QtWidgets.QApplication.translate
+
+    def translate(context, key, disambiguation=None, encoding=None, n=0):
+        return old_translate_fn(context, key, disambiguation, n)
+
+    QtWidgets.QApplication.translate = staticmethod(translate)
+
     return PySide2
 
 
@@ -204,13 +225,11 @@ def _init():
     this has executed.
 
     """
-
     preferred = os.getenv("QT_PREFERRED_BINDING")
     verbose = os.getenv("QT_VERBOSE") is not None
     bindings = (_pyside2, _pyqt5, _pyside, _pyqt4)
 
     if preferred:
-
         # Internal flag (used in installer)
         if preferred == "None":
             sys.modules[__name__].__wrapper_version__ = __version__
diff --git a/tests.py b/tests.py
index 887f1346..2b1bfbc4 100644
--- a/tests.py
+++ b/tests.py
@@ -208,3 +208,104 @@ def test_sip_api_already_set():
             import sip
             sip.setapi("QString", 1)
             assert_raises(ImportError, __import__, "Qt")
+
+
+def test_translate_and_UnicodeUTF8_in_pyside():
+    _str_ = str
+    if PYTHON == 2:
+        _str_ = basestring
+
+    with pyside():
+        from Qt import QtWidgets
+
+        # this does exist in PySide
+        assert QtWidgets.QApplication.UnicodeUTF8 is not None
+
+        # use patched method with old arguments
+        result = QtWidgets.QApplication.translate(
+            u'Href_Gui',
+            u'Text',
+            u'None',
+            QtWidgets.QApplication.UnicodeUTF8
+        )
+        assert isinstance(result, _str_)
+
+
+def test_translate_and_UnicodeUTF8_in_pyqt4():
+    _str_ = str
+    if PYTHON == 2:
+        _str_ = basestring
+
+    with pyqt4():
+        from Qt import QtWidgets
+
+        # this does exist in PyQt4
+        assert QtWidgets.QApplication.UnicodeUTF8 is not None
+
+        # use patched method with old arguments
+        result = QtWidgets.QApplication.translate(
+            u'Href_Gui',
+            u'Text',
+            u'None',
+            QtWidgets.QApplication.UnicodeUTF8
+        )
+
+        assert isinstance(result, _str_)
+
+
+def test_translate_and_UnicodeUTF8_in_pyside2():
+    _str_ = str
+    if PYTHON == 2:
+        _str_ = basestring
+
+    with pyside2():
+        from Qt import QtWidgets
+
+        # this does not exist in PySide2 by default
+        assert QtWidgets.QApplication.UnicodeUTF8 is -1
+
+        # use patched method with old arguments
+        result = QtWidgets.QApplication.translate(
+            u'Href_Gui',
+            u'Text',
+            u'None',
+            QtWidgets.QApplication.UnicodeUTF8
+        )
+        assert isinstance(result, _str_)
+
+        # use patched method with new arguments
+        result = QtWidgets.QApplication.translate(
+            u'SomeText',
+            u'Form',
+            u'None'
+        )
+        assert isinstance(result, _str_)
+
+
+def test_translate_and_UnicodeUTF8_in_PyQt5():
+    _str_ = str
+    if PYTHON == 2:
+        _str_ = basestring
+
+    with pyqt5():
+        from Qt import QtWidgets
+
+        # this does not exist in PyQt5 by default
+        assert QtWidgets.QApplication.UnicodeUTF8 is -1
+
+        # use patched method with old arguments
+        result = QtWidgets.QApplication.translate(
+            u'SomeText',
+            u'Form',
+            u'None',
+            QtWidgets.QApplication.UnicodeUTF8
+        )
+        assert isinstance(result, _str_)
+
+        # use patched method with new arguments
+        result = QtWidgets.QApplication.translate(
+            u'SomeText',
+            u'Form',
+            u'None'
+        )
+        assert isinstance(result, _str_)