--- a/mod_pubsub_summary/mod_pubsub_summary.lua	Wed Jun 30 14:48:59 2021 +0200
+++ b/mod_pubsub_summary/mod_pubsub_summary.lua	Wed Jun 30 15:53:49 2021 +0200
@@ -28,7 +28,7 @@
 				lt = "<";
 				gt = ">";
 				amp = "&";
-				nbsp = utf8 and utf8.char(0xa0) or " ";
+				nbsp = "\194\160"; -- U+00A0
 			});
 	end
 	local summary;