diff --git a/src/librustc_mir/transform/check_consts/validation.rs b/src/librustc_mir/transform/check_consts/validation.rs
index bee37f69a5ec5..829d9ee6fafd7 100644
--- a/src/librustc_mir/transform/check_consts/validation.rs
+++ b/src/librustc_mir/transform/check_consts/validation.rs
@@ -560,7 +560,7 @@ impl Visitor<'tcx> for Validator<'_, 'mir, 'tcx> {
         trace!("visit_statement: statement={:?} location={:?}", statement, location);
 
         match statement.kind {
-            StatementKind::Assign(..) => {
+            StatementKind::Assign(..) | StatementKind::SetDiscriminant { .. } => {
                 self.super_statement(statement, location);
             }
             StatementKind::FakeRead(FakeReadCause::ForMatchedPlace, _) => {
@@ -568,7 +568,6 @@ impl Visitor<'tcx> for Validator<'_, 'mir, 'tcx> {
             }
             // FIXME(eddyb) should these really do nothing?
             StatementKind::FakeRead(..) |
-            StatementKind::SetDiscriminant { .. } |
             StatementKind::StorageLive(_) |
             StatementKind::StorageDead(_) |
             StatementKind::InlineAsm {..} |
diff --git a/src/librustc_mir/transform/qualify_min_const_fn.rs b/src/librustc_mir/transform/qualify_min_const_fn.rs
index 81f4c277f4d76..e40d6a5952edb 100644
--- a/src/librustc_mir/transform/qualify_min_const_fn.rs
+++ b/src/librustc_mir/transform/qualify_min_const_fn.rs
@@ -225,7 +225,7 @@ fn check_statement(
         StatementKind::FakeRead(_, place) => check_place(tcx, place, span, def_id, body),
 
         // just an assignment
-        StatementKind::SetDiscriminant { .. } => Ok(()),
+        StatementKind::SetDiscriminant { place, .. } => check_place(tcx, place, span, def_id, body),
 
         | StatementKind::InlineAsm { .. } => {
             Err((span, "cannot use inline assembly in const fn".into()))