diff --git a/test/fuzztest/timeservice_fuzzer/timeservice_fuzzer.cpp b/test/fuzztest/timeservice_fuzzer/timeservice_fuzzer.cpp
index 19131c9..11120d8 100644
--- a/test/fuzztest/timeservice_fuzzer/timeservice_fuzzer.cpp
+++ b/test/fuzztest/timeservice_fuzzer/timeservice_fuzzer.cpp
@@ -33,7 +33,7 @@ uint32_t ConvertToUint32(const uint8_t* ptr)
     if (ptr == nullptr) {
         return 0;
     }
-    uint32_t bigVar = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
+    uint32_t bigVar = static_cast<uint32_t>(ptr[1]);
     return bigVar;
 }