diff --git a/parser.cpp b/parser.cpp
index 6b578fc..c9b94f3 100644
--- a/parser.cpp
+++ b/parser.cpp
@@ -148,14 +148,14 @@ std::string Parser::parse(const PageDao &pagedao, UrlProvider &provider, const s
 	std::string result;
 	// we don't care about commands, but we nevertheless replace them with empty strings
 	std::regex tagfinder(
-		R"(\[(b|i|u|li||ul|ol|code|blockquote|img|link|wikilink|h\d|cmd:visible|cmd:rename|cmd:redirect|cmd:pagetitle|cmd:allowinclude|category|dynamic:postlist|dynamic:includepage|dynamic:getvar|dynamic:setvar)*?\]((\s|\S)*?)\[/\1])");
+		R"(\[(b|i|u|s|li||ul|ol|code|blockquote|img|link|wikilink|h\d|cmd:visible|cmd:rename|cmd:redirect|cmd:pagetitle|cmd:allowinclude|category|dynamic:postlist|dynamic:includepage|dynamic:getvar|dynamic:setvar)*?\]((\s|\S)*?)\[/\1])");
 	result = utils::regex_callback_replacer(
 		tagfinder, content,
 		[&](std::smatch &match)
 		{
 			std::string tag = match.str(1);
 			std::string content = match.str(2);
-			std::string justreplace[] = {"b", "i", "u", "ul", "li", "ol"};
+			std::string justreplace[] = {"b", "i", "u", "ul", "li", "ol", "s"};
 			if(tag != "code" && tag != "blockquote")
 			{
 				content = parse(pagedao, provider, content, callback);