diff --git a/packages/niri-config/template.kdl b/packages/niri-config/template.kdl
index 1545511..68a9069 100644
--- a/packages/niri-config/template.kdl
+++ b/packages/niri-config/template.kdl
@@ -174,6 +174,11 @@ window-rule {
     default-column-width {}
 }
 
+window-rule {
+  match app-id=r#"^factorio$"#
+  default-column-width { proportion: 1; }
+}
+
 window-rule {
   match app-id=r#"^kitty$"#
   draw-border-with-background false