diff --git a/test/fuzztest/concurrent_fuzzer/concurrent_fuzzer.cpp b/test/fuzztest/concurrent_fuzzer/concurrent_fuzzer.cpp
index 44b5b79cea55d39f202177270535cbb3cde47e72..e1616b49b05c76468ea58e529fa3a463cd489c74 100644
--- a/test/fuzztest/concurrent_fuzzer/concurrent_fuzzer.cpp
+++ b/test/fuzztest/concurrent_fuzzer/concurrent_fuzzer.cpp
@@ -958,7 +958,7 @@ bool FuzzTaskControllerCheckJsonValid(const uint8_t* data, size_t size)
 }
 } // namespace OHOS
 
-void TaskControllerFuzzTestSuit(const uint8_t *data, size_t size)
+static void TaskControllerFuzzTestSuit(const uint8_t *data, size_t size)
 {
     OHOS::FuzzTaskControllerQueryRenderService(data, size);
     OHOS::FuzzTaskControllerQueryExecutorStart(data, size);