diff --git a/include/cinatra/http_parser.hpp b/include/cinatra/http_parser.hpp
index 543198d4..76a967f4 100644
--- a/include/cinatra/http_parser.hpp
+++ b/include/cinatra/http_parser.hpp
@@ -47,7 +47,7 @@ class http_parser {
     }
     if (header_len_ < 0) [[unlikely]] {
       CINATRA_LOG_WARNING << "parse http head failed";
-      if (size == CINATRA_MAX_HTTP_HEADER_FIELD_SIZE) {
+      if (num_headers_ == CINATRA_MAX_HTTP_HEADER_FIELD_SIZE) {
         CINATRA_LOG_ERROR << "the field of http head is out of max limit "
                           << CINATRA_MAX_HTTP_HEADER_FIELD_SIZE
                           << ", you can define macro "
@@ -75,7 +75,7 @@ class http_parser {
 
     if (header_len_ < 0) [[unlikely]] {
       CINATRA_LOG_WARNING << "parse http head failed";
-      if (size == CINATRA_MAX_HTTP_HEADER_FIELD_SIZE) {
+      if (num_headers_ == CINATRA_MAX_HTTP_HEADER_FIELD_SIZE) {
         CINATRA_LOG_ERROR << "the field of http head is out of max limit "
                           << CINATRA_MAX_HTTP_HEADER_FIELD_SIZE
                           << ", you can define macro "