diff --git a/src/config/mod.rs b/src/config/mod.rs
index 5487474519..22a0ed9529 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -145,7 +145,7 @@ impl Config {
         }
     }
 
-    /// Expand all `[package-groups]` references in `packages` into individual
+    /// Expand all `[package_groups]` references in `packages` into individual
     /// package entries. Must be called after `merge()` so that groups from all
     /// included configs are collected.
     ///