diff --git a/test/core/end2end/fuzzers/server_fuzzer.cc b/test/core/end2end/fuzzers/server_fuzzer.cc
index 60218674f02..fb794682c4b 100644
--- a/test/core/end2end/fuzzers/server_fuzzer.cc
+++ b/test/core/end2end/fuzzers/server_fuzzer.cc
@@ -91,6 +91,7 @@ DEFINE_PROTO_FUZZER(const fuzzer_input::Msg& msg) {
     grpc_core::ForceEnableExperiment("event_engine_listener", true);
     return 42;
   }();
+  GPR_ASSERT(once == 42);  // avoid unused variable warning
   grpc_core::ApplyFuzzConfigVars(msg.config_vars());
   grpc_core::TestOnlyReloadExperimentsFromConfigVariables();
   grpc_core::testing::ServerFuzzer(msg).Run(msg.api_actions());