diff --git a/vim/syntax/objc.vim b/vim/syntax/objc.vim
index b159703..9bea70b 100644
--- a/vim/syntax/objc.vim
+++ b/vim/syntax/objc.vim
@@ -134,7 +134,7 @@ syn keyword objcType of_string_encoding_t of_time_interval_t
 syn keyword objcType of_resolver_result_t of_udp_socket_address_t of_offset_t
 syn keyword objcType of_stat_t of_socket_t of_spinlock_t
 syn keyword objcType of_options_parser_option_t of_http_request_method_t
-syn keyword objcType of_http_request_protocol_version_t
+syn keyword objcType of_http_request_protocol_version_t of_socket_address_t
 syn keyword objcType of_file_attribute_key_t of_file_type_t of_file_attributes_t
 syn keyword objcConstant YES NO TRUE FALSE