diff --git a/Chapters/03-structs.qmd b/Chapters/03-structs.qmd
index 11b4861..1dd3552 100644
--- a/Chapters/03-structs.qmd
+++ b/Chapters/03-structs.qmd
@@ -290,6 +290,11 @@ xsw: switch (@as(u8, 1)) {
     2 => continue :xsw 3,
     3 => return,
     4 => {},
+    else => {
+        try stdout.print(
+            "Unmatched case, value: {d}\n", .{@as(u8, 1)}
+        );
+    },
 }
 ```