diff --git a/compiler/stable_mir/src/ty.rs b/compiler/stable_mir/src/ty.rs
index 440c9a1f031c2..d4a9b318cfc49 100644
--- a/compiler/stable_mir/src/ty.rs
+++ b/compiler/stable_mir/src/ty.rs
@@ -226,7 +226,6 @@ pub struct ImplDef(pub DefId);
 pub struct RegionDef(pub DefId);
 
 /// A list of generic arguments.
-/// The second field is for internal usage to allow retrieving the internal representation.
 #[derive(Clone, Debug)]
 pub struct GenericArgs(pub Vec<GenericArgKind>);