diff --git a/packages/core/src/types/WebChatActivity.ts b/packages/core/src/types/WebChatActivity.ts
index 9931d42a0d..eeaf4321cb 100644
--- a/packages/core/src/types/WebChatActivity.ts
+++ b/packages/core/src/types/WebChatActivity.ts
@@ -191,10 +191,10 @@ type CoreActivityEssence<
   (Type extends 'event'
     ? EventActivityEssence
     : Type extends 'message'
-    ? MessageActivityEssence
-    : Type extends 'typing'
-    ? TypingActivityEssence
-    : { type: Type });
+      ? MessageActivityEssence
+      : Type extends 'typing'
+        ? TypingActivityEssence
+        : { type: Type });
 
 // Concrete