diff --git a/clippy_lints/src/missing_const_for_fn.rs b/clippy_lints/src/missing_const_for_fn.rs
index e5f7cc51111..80da04fb7de 100644
--- a/clippy_lints/src/missing_const_for_fn.rs
+++ b/clippy_lints/src/missing_const_for_fn.rs
@@ -118,7 +118,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
 
         let mir = cx.tcx.optimized_mir(def_id);
 
-        if let Err((span, err)) = is_min_const_fn(cx.tcx, def_id.to_def_id(), &mir) {
+        if let Err((span, err)) = is_min_const_fn(cx.tcx, &mir) {
             if rustc_mir::const_eval::is_min_const_fn(cx.tcx, def_id.to_def_id()) {
                 cx.tcx.sess.span_err(span, &err);
             }
diff --git a/clippy_lints/src/redundant_clone.rs b/clippy_lints/src/redundant_clone.rs
index 4d20a819804..b4502c668dc 100644
--- a/clippy_lints/src/redundant_clone.rs
+++ b/clippy_lints/src/redundant_clone.rs
@@ -86,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone {
         let mir = cx.tcx.optimized_mir(def_id.to_def_id());
 
         let maybe_storage_live_result = MaybeStorageLive
-            .into_engine(cx.tcx, mir, def_id.to_def_id())
+            .into_engine(cx.tcx, mir)
             .pass_name("redundant_clone")
             .iterate_to_fixpoint()
             .into_results_cursor(mir);
diff --git a/clippy_lints/src/utils/qualify_min_const_fn.rs b/clippy_lints/src/utils/qualify_min_const_fn.rs
index 6809b1fa88d..19d890b4554 100644
--- a/clippy_lints/src/utils/qualify_min_const_fn.rs
+++ b/clippy_lints/src/utils/qualify_min_const_fn.rs
@@ -10,7 +10,8 @@ use std::borrow::Cow;
 
 type McfResult = Result<(), (Span, Cow<'static, str>)>;
 
-pub fn is_min_const_fn(tcx: TyCtxt<'tcx>, def_id: DefId, body: &'a Body<'tcx>) -> McfResult {
+pub fn is_min_const_fn(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>) -> McfResult {
+    let def_id = body.source.def_id();
     let mut current = def_id;
     loop {
         let predicates = tcx.predicates_of(current);