diff --git a/internal/tui/components/chat/messages/renderer.go b/internal/tui/components/chat/messages/renderer.go
index 71cd7288f5c364b5dd0d5c5a4e80c8d4fa465a5e..1c6a96b445fe6053807309b0c4aefeab931387c6 100644
--- a/internal/tui/components/chat/messages/renderer.go
+++ b/internal/tui/components/chat/messages/renderer.go
@@ -260,8 +260,10 @@ func (er editRenderer) Render(v *toolCallCmp) string {
 		formatter := core.DiffFormatter().
 			Before(fsext.PrettyPath(params.FilePath), meta.OldContent).
 			After(fsext.PrettyPath(params.FilePath), meta.NewContent).
-			Split().
 			Width(v.textWidth() - 2) // -2 for padding
+		if v.textWidth() > 120 {
+			formatter = formatter.Split()
+		}
 		return formatter.String()
 	})
 }