1 files changed, 5 insertions, 0 deletions
diff --git a/test/core/end2end/fuzzers/api_fuzzer.cc b/test/core/end2end/fuzzers/api_fuzzer.cc
index 9544adb912..e97a544e12 100644
--- a/test/core/end2end/fuzzers/api_fuzzer.cc
+++ b/test/core/end2end/fuzzers/api_fuzzer.cc
@@ -390,6 +390,10 @@ grpc_ares_request* my_dns_lookup_ares_locked(
   return nullptr;
 }
 
+static void my_cancel_ares_request_locked(grpc_ares_request* request) {
+  GPR_ASSERT(request == nullptr);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // client connection
 
@@ -705,6 +709,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   }
   grpc_set_resolver_impl(&fuzzer_resolver);
   grpc_dns_lookup_ares_locked = my_dns_lookup_ares_locked;
+  grpc_cancel_ares_request_locked = my_cancel_ares_request_locked;
 
   GPR_ASSERT(g_channel == nullptr);
   GPR_ASSERT(g_server == nullptr);