diff --git a/src/grammars.hpp b/src/grammars.hpp
index ed21e31..06e1bf8 100644
--- a/src/grammars.hpp
+++ b/src/grammars.hpp
@@ -34,6 +34,7 @@
 x3::rule<leaf_data_uint_class, uint32_t> const leaf_data_uint = "leaf_data_uint";
 x3::rule<leaf_data_string_class, std::string> const leaf_data_string = "leaf_data_string";
 
+x3::rule<ls_class, ls_> const ls = "ls";
 x3::rule<cd_class, cd_> const cd = "cd";
 x3::rule<set_class, set_> const set = "set";
 x3::rule<create_class, create_> const create = "create";
@@ -125,6 +126,9 @@
 auto const space_separator =
         x3::omit[x3::no_skip[space]];
 
+auto const ls_def =
+        lit("ls") >> -path;
+
 auto const cd_def =
         lit("cd") >> space_separator > path;
 
@@ -138,7 +142,7 @@
         lit("set") >> space_separator > leafPath > leaf_data;
 
 auto const command_def =
-        x3::expect[cd | create | delete_rule | set] >> x3::eoi;
+        x3::expect[cd | create | delete_rule | set | ls] >> x3::eoi;
 
 #if __clang__
 #pragma GCC diagnostic pop
@@ -165,6 +169,7 @@
 BOOST_SPIRIT_DEFINE(leaf_data_uint)
 BOOST_SPIRIT_DEFINE(leaf_data_string)
 BOOST_SPIRIT_DEFINE(set)
+BOOST_SPIRIT_DEFINE(ls)
 BOOST_SPIRIT_DEFINE(cd)
 BOOST_SPIRIT_DEFINE(create)
 BOOST_SPIRIT_DEFINE(delete_rule)