1 files changed, 2 insertions, 6 deletions
diff --git a/compiler/rustc_symbol_mangling/src/v0.rs b/compiler/rustc_symbol_mangling/src/v0.rs
index f1b1b4ed2bb..6bc375512ac 100644
--- a/compiler/rustc_symbol_mangling/src/v0.rs
+++ b/compiler/rustc_symbol_mangling/src/v0.rs
@@ -46,12 +46,8 @@ pub(super) fn mangle<'tcx>(
         ty::InstanceDef::VTableShim(_) => Some("vtable"),
         ty::InstanceDef::ReifyShim(_) => Some("reify"),
 
-        ty::InstanceDef::ConstructCoroutineInClosureShim { target_kind, .. }
-        | ty::InstanceDef::CoroutineKindShim { target_kind, .. } => match target_kind {
-            ty::ClosureKind::Fn => unreachable!(),
-            ty::ClosureKind::FnMut => Some("fn_mut"),
-            ty::ClosureKind::FnOnce => Some("fn_once"),
-        },
+        ty::InstanceDef::ConstructCoroutineInClosureShim { .. }
+        | ty::InstanceDef::CoroutineKindShim { .. } => Some("fn_once"),
 
         _ => None,
     };