diff --git a/src/js/utils/chat-messages.ts b/src/js/utils/chat-messages.ts
index 2dbf2d0..0235c32 100644
--- a/src/js/utils/chat-messages.ts
+++ b/src/js/utils/chat-messages.ts
@@ -187,6 +187,7 @@ export const ttsMessageSubstitutions = (input: string): string =>
         .replace(/\broflmao\b/gi, 'rolling on the floor laughing my ass off')
         .replace(/\broflol\b/gi, 'rolling on the floor laughing out loud')
         .replace(/\blol\b/gi, 'laughing out loud')
+        .replace(/\blmfao\b/gi, 'laughing my fuckin\' ass off')
         .replace(/\blmao\b/gi, 'laughing my ass off')
         .replace(/\bwip\b/gi, 'work-in-progress')
         .replace(/\bsup\b/gi, "what's up")