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-rw-r--r--compiler/rustc_traits/src/chalk/db.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_traits/src/chalk/db.rs b/compiler/rustc_traits/src/chalk/db.rs
index c319b2e31c7..1d3ea96666f 100644
--- a/compiler/rustc_traits/src/chalk/db.rs
+++ b/compiler/rustc_traits/src/chalk/db.rs
@@ -294,7 +294,7 @@ impl<'tcx> chalk_solve::RustIrDatabase<RustInterner<'tcx>> for RustIrDatabase<'t
         };
         Arc::new(chalk_solve::rust_ir::FnDefDatum {
             id: fn_def_id,
-            sig: sig.0.lower_into(self.interner),
+            sig: sig.skip_binder().lower_into(self.interner),
             binders: chalk_ir::Binders::new(binders, bound),
         })
     }