diff --git a/src/main.ts b/src/main.ts
index 4545563..71e0111 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -57,6 +57,7 @@ async function process_text(text: string): Promise<string> {
   for (const emote of matches.reverse()) {
     const [match, code] = emote;
     const index = emote.index ?? 0;
+    if (!(code in emotes)) continue;
 
     text =
       text.substring(0, index) +