diff --git a/kitty.conf b/kitty.conf
index 36cbce71..df3fa030 100644
--- a/kitty.conf
+++ b/kitty.conf
@@ -315,7 +315,7 @@ window_resize_step_lines 2
 #: resizing windows. The cells value is used for horizontal resizing
 #: and the lines value for vertical resizing.
 
-window_border_width 0
+window_border_width 0.4
 
 #: The width (in pts) of window borders. Will be rounded to the
 #: nearest number of pixels based on screen resolution. Note that