diff --git a/qtgui/mainwindow.py b/qtgui/mainwindow.py
index 32761cf..3f5f8d9 100644
--- a/qtgui/mainwindow.py
+++ b/qtgui/mainwindow.py
@@ -263,8 +263,8 @@ class MainWindow(QtWidgets.QMainWindow):
 
             if "argodejoIconPath" in entry and entry["argodejoIconPath"]: #not null
                 icon = QtGui.QIcon(entry["argodejoIconPath"])
-                assert not icon.isNull()
-            else:
+
+            if icon.isNull(): #the DB cache could be wrong. Deinstalled a program and not updated the DB.
                 if "icon" in entry:
                     icon = QtGui.QIcon.fromTheme(entry["icon"])
                 else: