diff --git a/av_transport/av_trans_control_center/test/fuzztest/avtransstubonremoterequest_fuzzer/avtransstubonremoterequest_fuzzer.cpp b/av_transport/av_trans_control_center/test/fuzztest/avtransstubonremoterequest_fuzzer/avtransstubonremoterequest_fuzzer.cpp
index 707da10d3975c295b3964a74c9b90340f6be897b..6af636e167635a07758a78c4c9aff8377c9c38ea 100644
--- a/av_transport/av_trans_control_center/test/fuzztest/avtransstubonremoterequest_fuzzer/avtransstubonremoterequest_fuzzer.cpp
+++ b/av_transport/av_trans_control_center/test/fuzztest/avtransstubonremoterequest_fuzzer/avtransstubonremoterequest_fuzzer.cpp
@@ -25,6 +25,17 @@
 namespace OHOS {
 namespace DistributedHardware {
 const uint32_t DC_MESSAGE_SIZE = 4;
+
+std::string MarshalSharedMemory(const AVTransSharedMemory &memory)
+{
+    return "";
+}
+
+AVTransSharedMemory UnmarshalSharedMemory(const std::string &jsonStr)
+{
+    return AVTransSharedMemory{0, 0, ""};
+}
+
 void AVTransStubOnRemoteRequestFuzzTest(const uint8_t *data, size_t size)
 {
     if ((data == nullptr) || (size < sizeof(int32_t))) {