diff --git a/src/commands.cc b/src/commands.cc
index b8c33dce..f2925c5d 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -492,6 +492,8 @@ void declare_option(const CommandParameters& params, Context& context)
         opt = &GlobalOptions::instance().declare_option<int>(params[1], 0);
     else if (params[0] == "str")
         opt = &GlobalOptions::instance().declare_option<String>(params[1], "");
+    else if (params[0] == "regex")
+        opt = &GlobalOptions::instance().declare_option<Regex>(params[1], Regex{});
     else if (params[0] == "int-list")
         opt = &GlobalOptions::instance().declare_option<std::vector<int>>(params[1], {});
     else if (params[0] == "str-list")