diff --git a/src/main.rs b/src/main.rs
index 9e2b4bf..530f0cf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -581,6 +581,7 @@ fn maybe_create_parents(filename: &Path) -> anyhow::Result<()> {
     Ok(())
 }
 
+#[must_use]
 enum CheckResult {
     Pass,
     Fail,