diff --git a/src/ox/model/desctypes.hpp b/src/ox/model/desctypes.hpp
index fc44ffd6a..f8ba8eaf8 100644
--- a/src/ox/model/desctypes.hpp
+++ b/src/ox/model/desctypes.hpp
@@ -30,12 +30,12 @@ static constexpr auto buildTypeId(CRStringView name, int version,
                                   const TypeParamPack &typeParams) noexcept {
 	String tp;
 	if (typeParams.size()) {
-		tp = "<";
+		tp = "#";
 		for (const auto &p : typeParams) {
 			tp += p + ",";
 		}
 		tp = tp.substr(0, tp.len() - 1);
-		tp += ">";
+		tp += "#";
 	}
 	return ox::sfmt("{}{};{}", name, tp, version);
 }