diff --git a/Signal/src/ViewControllers/ConversationView/TypingIndicatorInteraction.swift b/Signal/src/ViewControllers/ConversationView/TypingIndicatorInteraction.swift
index f2bfc47cf..9ae0d7c13 100644
--- a/Signal/src/ViewControllers/ConversationView/TypingIndicatorInteraction.swift
+++ b/Signal/src/ViewControllers/ConversationView/TypingIndicatorInteraction.swift
@@ -43,7 +43,7 @@ public class TypingIndicatorInteraction: TSInteraction {
     }
 
     @objc
-    public override func save(with transaction: YapDatabaseReadWriteTransaction!) {
+    public override func save(with transaction: YapDatabaseReadWriteTransaction) {
         owsFailDebug("The transient interaction should not be saved in the database.")
     }
 }