diff --git a/upb/util/def_to_proto_test.cc b/upb/util/def_to_proto_test.cc
index 18d2304401..e5d4b37086 100644
--- a/upb/util/def_to_proto_test.cc
+++ b/upb/util/def_to_proto_test.cc
@@ -270,6 +270,17 @@ TEST(FuzzTest, DefaultWithValidHexEscapePrintable) {
 //                                                  weak_dependency: 0
 //                                                })pb"));
 // }
+//
+// TEST(FuzzTest, NanInOptions) {
+//   RoundTripDescriptor(
+//       ParseTextProtoOrDie(R"pb(file {
+//                                  name: ""
+//                                  service {
+//                                    name: "A"
+//                                    options { failure_detection_delay: nan }
+//                                  }
+//                                })pb"));
+// }
 // end:google_only
 
 TEST(FuzzTest, PackageStartsWithNumber) {
diff --git a/upb/util/def_to_proto_test.h b/upb/util/def_to_proto_test.h
index 809a7cab46..7668223858 100644
--- a/upb/util/def_to_proto_test.h
+++ b/upb/util/def_to_proto_test.h
@@ -30,7 +30,7 @@ MATCHER_P(EqualsProtoTreatNansAsEqual, proto,
   google::protobuf::util::MessageDifferencer differencer;
   differencer.set_field_comparator(&comparator);
   differencer.ReportDifferencesToString(&differences);
-  bool eq = differencer.Equals(proto, arg);
+  bool eq = differencer.Compare(proto, arg);
   if (!eq) {
     *result_listener << differences;
   }