diff --git a/helix-term/tests/test/helpers.rs b/helix-term/tests/test/helpers.rs
index e8bd6c35e..2c5043d68 100644
--- a/helix-term/tests/test/helpers.rs
+++ b/helix-term/tests/test/helpers.rs
@@ -286,6 +286,8 @@ impl AppBuilder {
         self
     }
 
+    // Remove this attribute once `with_config` is used in a test:
+    #[allow(dead_code)]
     pub fn with_config(mut self, config: Config) -> Self {
         self.config = config;
         self