diff --git a/src/MarkdownParser.cxx b/src/MarkdownParser.cxx
index ea0e57a..22b8889 100644
--- a/src/MarkdownParser.cxx
+++ b/src/MarkdownParser.cxx
@@ -230,7 +230,7 @@ std::string make_html(std::filesystem::path const &path) {
 					break;
 				case '-':
 					if (x != 0) {
-						html += c;
+						append('-');
 						break;
 					}