diff --git a/syncplay/ui/ConfigurationGetter.py b/syncplay/ui/ConfigurationGetter.py
index a176f98..79e4f1e 100755
--- a/syncplay/ui/ConfigurationGetter.py
+++ b/syncplay/ui/ConfigurationGetter.py
@@ -403,9 +403,11 @@ class ConfigurationGetter(object):
         self._overrideConfigWithArgs(args)
         if not self._config['noGui']:
             try:
-	            from syncplay.vendor.Qt import QtWidgets
+	            from syncplay.vendor.Qt import QtWidgets, IsPySide, IsPySide2
 	            from syncplay.vendor.Qt.QtCore import QCoreApplication
 	            from syncplay.vendor import qt5reactor
+	            if not (IsPySide2 or IsPySide):
+	                raise ImportError
 	            if QCoreApplication.instance() is None:
 	              self.app = QtWidgets.QApplication(sys.argv)
 	            qt5reactor.install()