diff --git a/prosody-modules/mod_muc_http_defaults/mod_muc_http_defaults.lua b/prosody-modules/mod_muc_http_defaults/mod_muc_http_defaults.lua
index 805dde14..39cff2e0 100644
--- a/prosody-modules/mod_muc_http_defaults/mod_muc_http_defaults.lua
+++ b/prosody-modules/mod_muc_http_defaults/mod_muc_http_defaults.lua
@@ -135,7 +135,7 @@ local function apply_config(room, settings)
 			room._data.x_peertubelivechat_emoji_only_mode = config.livechat_emoji_only;
 		end
 		if (type(config.livechat_emoji_only_regexp) == "string" and config.livechat_emoji_only_regexp ~= "") then
-			room._data.x_peertubelivechat_emoji_only_regexp = config.emoji_only_regexp;
+			room._data.x_peertubelivechat_emoji_only_regexp = config.livechat_emoji_only_regexp;
 		end
 		if (type(config.livechat_muc_terms) == "string") then
 			-- we don't need to use set_muc_terms here, as this is called for a newly created room