diff --git a/source/libs/stream/src/streamBackendRocksdb.c b/source/libs/stream/src/streamBackendRocksdb.c
index 6309cb9df249f34af8cb3fcbfa7e92ef4a42aded..b3995f020b1147f8ec3fccd3109f022af72a5729 100644
--- a/source/libs/stream/src/streamBackendRocksdb.c
+++ b/source/libs/stream/src/streamBackendRocksdb.c
@@ -574,7 +574,7 @@ int32_t decodeValueFunc(void* value, int32_t vlen, int64_t* ttl, char** dest) {
   }
   p = taosDecodeFixedI64(p, &key.unixTimestamp);
   p = taosDecodeFixedI32(p, &key.len);
-  if (vlen != sizeof(int64_t) + sizeof(int32_t) + key.len) {
+  if (vlen != (sizeof(int64_t) + sizeof(int32_t) + key.len)) {
     if (dest != NULL) *dest = NULL;
     qError("vlen: %d, read len: %d", vlen, key.len);
     return -1;
diff --git a/source/libs/stream/src/tstreamFileState.c b/source/libs/stream/src/tstreamFileState.c
index 7ea1a41925c50ee68abb7d99ebbd089d354e75b6..757b1de6b6a3e831968ae4f68c512388242df154 100644
--- a/source/libs/stream/src/tstreamFileState.c
+++ b/source/libs/stream/src/tstreamFileState.c
@@ -419,7 +419,9 @@ int32_t deleteExpiredCheckPoint(SStreamFileState* pFileState, TSKEY mark) {
     if (code != 0 || len == 0 || val == NULL) {
       return TSDB_CODE_FAILED;
     }
-    sscanf(val, "%" PRId64 "", &maxCheckPointId);
+    memcpy(val, buf, len);
+    buf[len] = 0;
+    maxCheckPointId = atol((char*)buf);
     taosMemoryFree(val);
   }
   for (int64_t i = maxCheckPointId; i > 0; i--) {
@@ -431,16 +433,17 @@ int32_t deleteExpiredCheckPoint(SStreamFileState* pFileState, TSKEY mark) {
     if (code != 0) {
       return TSDB_CODE_FAILED;
     }
+    memcpy(val, buf, len);
+    buf[len] = 0;
+    taosMemoryFree(val);
+
     TSKEY ts;
-    sscanf(val, "%" PRId64 "", &ts);
+    ts = atol((char*)buf);
     if (ts < mark) {
       // statekey winkey.ts < mark
       forceRemoveCheckpoint(pFileState, i);
-      taosMemoryFreeClear(val);
       break;
-    } else {
     }
-    taosMemoryFree(val);
   }
   return code;
 }