diff --git a/home/modules/niri.nix b/home/modules/niri.nix
index da92f51..f12bbb4 100644
--- a/home/modules/niri.nix
+++ b/home/modules/niri.nix
@@ -182,6 +182,11 @@ in
         {
           matches = [ {app-id = "emacs";} ];
           open-on-output = "DP-1";
+          default-column-width.proportion = 1.0;
+        }
+        {
+          matches = [ {app-id = "lumina";} ];
+          default-column-width.proportion = 1.0;
         }
         {
           matches = [{app-id = "org.qutebrowser.qutebrowser";}];