diff --git a/src/flow_control/match/guard.md b/src/flow_control/match/guard.md
index 63008a7431..af81f64c99 100644
--- a/src/flow_control/match/guard.md
+++ b/src/flow_control/match/guard.md
@@ -3,6 +3,7 @@
 A `match` *guard* can be added to filter the arm.
 
 ```rust,editable
+#[allow(dead_code)]
 enum Temperature {
     Celsius(i32),
     Fahrenheit(i32),