diff --git a/cromulant/window.py b/cromulant/window.py
index 0b53fbc..68be0c2 100644
--- a/cromulant/window.py
+++ b/cromulant/window.py
@@ -172,7 +172,7 @@ class Window:
         QComboBox QAbstractItemView {{
             background-color: {Config.alt_background_color};
             color: {Config.alt_text_color};
-            border: 1px solid {Config.alt_border_color};
+            border: 2px solid {Config.alt_border_color};
             padding: 6px;
         }}