diff --git a/ui/opensnitch/customwidgets/colorizeddelegate.py b/ui/opensnitch/customwidgets/colorizeddelegate.py
index e4add17fe1..7b75046fe8 100644
--- a/ui/opensnitch/customwidgets/colorizeddelegate.py
+++ b/ui/opensnitch/customwidgets/colorizeddelegate.py
@@ -48,6 +48,7 @@ def paint(self, painter, option, index):
         defaultPen = painter.pen()
         defaultBrush = painter.brush()
 
+        self._style = QApplication.style()
         # get default margins in order to respect them.
         # option.widget is the QTableView
         hmargin = self._style.pixelMetric(