diff --git a/lib/modules.nix b/lib/modules.nix
index 290b9ce0b698..d6061ec6d039 100644
--- a/lib/modules.nix
+++ b/lib/modules.nix
@@ -1881,7 +1881,7 @@ let
 
     This function does not add support for deduplication and `disabledModules`,
     although that could be achieved by wrapping the returned module and setting
-    the `_key` module attribute.
+    the `key` module attribute.
     The reason for this omission is that the file path is not guaranteed to be
     a unique identifier for the module, as two instances of the module may
     reference different `arg`s in their closures.