diff --git a/cspuz_core/src/config.rs b/cspuz_core/src/config.rs
index 0e7a6ff8..063e18ee 100644
--- a/cspuz_core/src/config.rs
+++ b/cspuz_core/src/config.rs
@@ -88,6 +88,7 @@ fn default_backend_from_env() -> Backend {
     }
 }
 
+#[allow(dead_code)]
 fn to_config_name(s: &str) -> String {
     s.replace('-', "_")
 }