diff --git a/src/modules/http/src/gcJson.c b/src/modules/http/src/gcJson.c
index 0cb20ec7e1..ecd9235644 100644
--- a/src/modules/http/src/gcJson.c
+++ b/src/modules/http/src/gcJson.c
@@ -119,7 +119,7 @@ bool gcBuildQueryJson(HttpContext *pContext, HttpSqlCmd *cmd, TAOS_RES *result,
     cmd->numOfRows += numOfRows;
   }
 
-  for (int i = 0; i < numOfRows; ++i) {
+  for (int k = 0; k < numOfRows; ++k) {
     TAOS_ROW row = taos_fetch_row(result);
 
     // for group by
diff --git a/src/modules/http/src/restJson.c b/src/modules/http/src/restJson.c
index 8aa0ac5069..6c04d39f45 100644
--- a/src/modules/http/src/restJson.c
+++ b/src/modules/http/src/restJson.c
@@ -94,7 +94,7 @@ bool restBuildSqlJson(HttpContext *pContext, HttpSqlCmd *cmd, TAOS_RES *result,
   int         num_fields = taos_num_fields(result);
   TAOS_FIELD *fields = taos_fetch_fields(result);
 
-  for (int i = 0; i < numOfRows; ++i) {
+  for (int k = 0; k < numOfRows; ++k) {
     TAOS_ROW row = taos_fetch_row(result);
 
     // data row array begin
diff --git a/src/modules/http/src/tgHandle.c b/src/modules/http/src/tgHandle.c
index ac17d6da09..80a178c776 100644
--- a/src/modules/http/src/tgHandle.c
+++ b/src/modules/http/src/tgHandle.c
@@ -262,6 +262,8 @@ int tgReadSchema(const char *fileName) {
   size_t result = fread(content, 1, contentSize, fp);
   if (result != contentSize) {
     httpError("failed to read telegraf schema file:%s", fileName);
+    fclose(fp);
+    free(content);
     return -1;
   }