diff --git a/src/builtin_echo.cpp b/src/builtin_echo.cpp
index c59a5fcfa..74d6db059 100644
--- a/src/builtin_echo.cpp
+++ b/src/builtin_echo.cpp
@@ -18,7 +18,7 @@ struct echo_cmd_opts_t {
     bool interpret_special_chars = false;
 };
 static const wchar_t *const short_options = L"+:Eens";
-static const struct woption *long_options = NULL;
+static const struct woption * const long_options = NULL;
 
 static int parse_cmd_opts(echo_cmd_opts_t &opts, int *optind, int argc, wchar_t **argv,
                           parser_t &parser, io_streams_t &streams) {