diff --git a/app/ui/__init__.py b/app/ui/__init__.py
index 749cd9b3..d04fe64d 100644
--- a/app/ui/__init__.py
+++ b/app/ui/__init__.py
@@ -1,12 +1,16 @@
 import gi
 
 gi.require_version('Gtk', '3.0')
-from gi.repository import Gtk, Gdk
+from gi.repository import Gtk
 
-CODED_ICON = Gtk.IconTheme.get_default().load_icon("gtk-dialog-authentication-panel", 16, 0)
-LOCKED_ICON = Gtk.IconTheme.get_default().load_icon("system-lock-screen", 16, 0)
-HIDE_ICON = Gtk.IconTheme.get_default().load_icon("go-jump", 16, 0)
-TV_ICON = Gtk.IconTheme.get_default().load_icon("tv-symbolic", 16, 0)
+theme = Gtk.IconTheme.get_default()
+_IMAGE_MISSING = theme.load_icon("image-missing", 16, 0) if theme.lookup_icon("image-missing", 16, 0) else None
+CODED_ICON = theme.load_icon("gtk-dialog-authentication-panel", 16, 0) if theme.lookup_icon(
+    "gtk-dialog-authentication-panel", 16, 0) else _IMAGE_MISSING
+LOCKED_ICON = theme.load_icon("system-lock-screen", 16, 0) if theme.lookup_icon(
+    "system-lock-screen", 16, 0) else _IMAGE_MISSING
+HIDE_ICON = theme.load_icon("go-jump", 16, 0) if theme.lookup_icon("go-jump", 16, 0) else _IMAGE_MISSING
+TV_ICON = theme.load_icon("tv-symbolic", 16, 0) if theme.lookup_icon("tv-symbolic", 16, 0) else _IMAGE_MISSING
 
 if __name__ == "__main__":
     pass