diff --git a/scripts/man/gen_man.d b/scripts/man/gen_man.d
index 1524ea1..d9625be 100755
--- a/scripts/man/gen_man.d
+++ b/scripts/man/gen_man.d
@@ -106,8 +106,8 @@
 string highlightArguments(string args)
 {
 	import std.regex : regex, replaceAll;
-	static immutable re = regex("<([^>]*)>");
-	static immutable reReplacement = "<%s>".format(`$1`.italic);
+	static auto re = regex("<([^>]*)>");
+	static const reReplacement = "<%s>".format(`$1`.italic);
 	return args.replaceAll(re, reReplacement);
 }