diff --git a/compiler/rustc_mir/src/transform/check_consts/ops.rs b/compiler/rustc_mir/src/transform/check_consts/ops.rs
index 9e90a7519cf2..99ffb0edce9e 100644
--- a/compiler/rustc_mir/src/transform/check_consts/ops.rs
+++ b/compiler/rustc_mir/src/transform/check_consts/ops.rs
@@ -72,7 +72,7 @@ impl NonConstOp for FnCallIndirect {
 
 /// A function call where the callee is not marked as `const`.
 #[derive(Debug)]
-pub struct FnCallNonConst(pub DefId);
+pub struct FnCallNonConst;
 impl NonConstOp for FnCallNonConst {
     fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> DiagnosticBuilder<'tcx> {
         struct_span_err!(
diff --git a/compiler/rustc_mir/src/transform/check_consts/validation.rs b/compiler/rustc_mir/src/transform/check_consts/validation.rs
index d1c07d1051d2..ebb4e7e7fa04 100644
--- a/compiler/rustc_mir/src/transform/check_consts/validation.rs
+++ b/compiler/rustc_mir/src/transform/check_consts/validation.rs
@@ -817,7 +817,7 @@ impl Visitor<'tcx> for Validator<'mir, 'tcx> {
                 // Attempting to call a trait method?
                 if let Some(trait_id) = tcx.trait_of_item(callee) {
                     if !self.tcx.features().const_trait_impl {
-                        self.check_op(ops::FnCallNonConst(callee));
+                        self.check_op(ops::FnCallNonConst);
                         return;
                     }
 
@@ -883,7 +883,7 @@ impl Visitor<'tcx> for Validator<'mir, 'tcx> {
                 }
 
                 if !tcx.is_const_fn_raw(callee) {
-                    self.check_op(ops::FnCallNonConst(callee));
+                    self.check_op(ops::FnCallNonConst);
                     return;
                 }