diff --git a/test/cpp/interop/client.cc b/test/cpp/interop/client.cc
index 369413e6a1d..ea27f2827de 100644
--- a/test/cpp/interop/client.cc
+++ b/test/cpp/interop/client.cc
@@ -163,8 +163,8 @@ int main(int argc, char** argv) {
       std::bind(&grpc::testing::InteropClient::DoUnimplementedMethod, &client);
   actions["unimplemented_service"] =
       std::bind(&grpc::testing::InteropClient::DoUnimplementedService, &client);
-  // actions["cacheable_unary"] =
-  //    std::bind(&grpc::testing::InteropClient::DoCacheableUnary, &client);
+  actions["cacheable_unary"] =
+     std::bind(&grpc::testing::InteropClient::DoCacheableUnary, &client);
 
   UpdateActions(&actions);