diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index f24677c5887de3f149cdb8c82a2078b859ff6750..11bd33f17226bbf026f1296f4633ff3500b840f0 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -56,6 +56,7 @@ static int32_t tscToInteger(SSQLToken *pToken, int64_t *value, char **endPtr) {
     radix = 2;
   }
 
+  errno = 0;
   *value = strtoll(pToken->z, endPtr, radix);
 
   return numType;
@@ -66,6 +67,8 @@ static int32_t tscToDouble(SSQLToken *pToken, double *value, char **endPtr) {
   if (TK_ILLEGAL == numType) {
     return numType;
   }
+
+  errno = 0;
   *value = strtod(pToken->z, endPtr);
   return numType;
 }