diff --git a/test/fuzztest/backupsa_fuzzer/backupsa_fuzzer.cpp b/test/fuzztest/backupsa_fuzzer/backupsa_fuzzer.cpp
index 6809b53b72dfcd96434800e363a15360ca4b373d..8b1ab7727f100210e57cf4f8830f49289ec33497 100644
--- a/test/fuzztest/backupsa_fuzzer/backupsa_fuzzer.cpp
+++ b/test/fuzztest/backupsa_fuzzer/backupsa_fuzzer.cpp
@@ -33,7 +33,7 @@ using namespace OHOS::FileManagement::Backup;
 namespace OHOS {
 constexpr size_t FOO_MAX_LEN = 1024;
 constexpr size_t U32_AT_SIZE = 4;
-constexpr uint8_t MAX_CALL_TRANSACTION = 16;
+constexpr uint8_t MAX_CALL_TRANSACTION = 64;
 constexpr int32_t SERVICE_ID = 5203;
 
 uint32_t GetU32Data(const char* ptr)