1 files changed, 7 insertions, 8 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/coherence.rs b/compiler/rustc_trait_selection/src/traits/coherence.rs
index f50f01a285b..07e78da37b3 100644
--- a/compiler/rustc_trait_selection/src/traits/coherence.rs
+++ b/compiler/rustc_trait_selection/src/traits/coherence.rs
@@ -695,15 +695,14 @@ impl<'a, 'tcx> ProofTreeVisitor<'tcx> for AmbiguityCausesVisitor<'a, 'tcx> {
                 source: CandidateSource::Impl(def_id),
                 result: Ok(_),
             } = cand.kind()
+                && let ty::ImplPolarity::Reservation = infcx.tcx.impl_polarity(def_id)
             {
-                if let ty::ImplPolarity::Reservation = infcx.tcx.impl_polarity(def_id) {
-                    let message = infcx
-                        .tcx
-                        .get_attr(def_id, sym::rustc_reservation_impl)
-                        .and_then(|a| a.value_str());
-                    if let Some(message) = message {
-                        self.causes.insert(IntercrateAmbiguityCause::ReservationImpl { message });
-                    }
+                let message = infcx
+                    .tcx
+                    .get_attr(def_id, sym::rustc_reservation_impl)
+                    .and_then(|a| a.value_str());
+                if let Some(message) = message {
+                    self.causes.insert(IntercrateAmbiguityCause::ReservationImpl { message });
                 }
             }
         }