Fix return type of Substitution::interned

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/hir_ty/src/types.rs b/crates/hir_ty/src/types.rs
index e1a28f5f7..89adad108 100644
--- a/crates/hir_ty/src/types.rs
+++ b/crates/hir_ty/src/types.rs
@@ -282,7 +282,7 @@ impl GenericArg {
 pub struct Substitution(SmallVec<[GenericArg; 2]>);
 
 impl Substitution {
-    pub fn interned(&self) -> &[GenericArg] {
+    pub fn interned(&self) -> &SmallVec<[GenericArg; 2]> {
         &self.0
     }