diff --git a/deps/http_parser/http_parser.gyp b/deps/http_parser/http_parser.gyp
index ef34ecaeaeab45..4364f73d1f4548 100644
--- a/deps/http_parser/http_parser.gyp
+++ b/deps/http_parser/http_parser.gyp
@@ -56,7 +56,7 @@
         'defines': [ 'HTTP_PARSER_STRICT=0' ],
         'include_dirs': [ '.' ],
       },
-      'defines': [ 'HTTP_PARSER_STRICT=0' ],
+      'defines': [ 'HTTP_MAX_HEADER_SIZE=8192', 'HTTP_PARSER_STRICT=0' ],
       'sources': [ './http_parser.c', ],
       'conditions': [
         ['OS=="win"', {
@@ -79,7 +79,7 @@
         'defines': [ 'HTTP_PARSER_STRICT=1' ],
         'include_dirs': [ '.' ],
       },
-      'defines': [ 'HTTP_PARSER_STRICT=1' ],
+      'defines': [ 'HTTP_MAX_HEADER_SIZE=8192', 'HTTP_PARSER_STRICT=1' ],
       'sources': [ './http_parser.c', ],
       'conditions': [
         ['OS=="win"', {