diff --git a/src/qweechat/qt_compat.py b/src/qweechat/qt_compat.py
index d59b5be..9f7b93b 100644
--- a/src/qweechat/qt_compat.py
+++ b/src/qweechat/qt_compat.py
@@ -9,20 +9,21 @@ from __future__ import with_statement
 from __future__ import division
 
 _TRY_PYSIDE = True
+uses_pyside = False
 
 try:
     if not _TRY_PYSIDE:
         raise ImportError()
     import PySide.QtCore as _QtCore
     QtCore = _QtCore
-    USES_PYSIDE = True
+    uses_pyside = True
 except ImportError:
     import sip
     sip.setapi('QString', 2)
     sip.setapi('QVariant', 2)
     import PyQt4.QtCore as _QtCore
     QtCore = _QtCore
-    USES_PYSIDE = False
+    uses_pyside = False
 
 
 def _pyside_import_module(moduleName):
@@ -35,7 +36,7 @@ def _pyqt4_import_module(moduleName):
     return getattr(pyside, moduleName)
 
 
-if USES_PYSIDE:
+if uses_pyside:
     import_module = _pyside_import_module
 
     Signal = QtCore.Signal
diff --git a/src/qweechat/qweechat.py b/src/qweechat/qweechat.py
index 6c4e5fa..55bd70b 100755
--- a/src/qweechat/qweechat.py
+++ b/src/qweechat/qweechat.py
@@ -190,6 +190,8 @@ class MainWindow(QtGui.QMainWindow):
         messages = ['<b>%s</b> %s' % (NAME, VERSION),
                     '&copy; 2011-2013 %s &lt;<a href="mailto:%s">%s</a>&gt;' % (AUTHOR, AUTHOR_MAIL, AUTHOR_MAIL),
                     '',
+                    'Running with %s' % ('PySide' if qt_compat.uses_pyside else 'PyQt4'),
+                    '',
                     'WeeChat site: <a href="%s">%s</a>' % (WEECHAT_SITE, WEECHAT_SITE),
                     '']
         self.about_dialog = AboutDialog(NAME, messages, self)