diff --git a/home/x/i3.nix b/home/x/i3.nix
index e1cb7ed..919a86b 100644
--- a/home/x/i3.nix
+++ b/home/x/i3.nix
@@ -168,6 +168,11 @@ in
           ];
         };
       };
+
+      # FIXME: integrate in config when it doesn't use deprecated new_window
+      extraConfig = ''
+        default_border pixel
+      '';
     };
   };
 }