diff --git a/briar-core/src/main/java/org/briarproject/briar/introduction/IntroductionManagerImpl.java b/briar-core/src/main/java/org/briarproject/briar/introduction/IntroductionManagerImpl.java
index d52192b49..9969ebdb6 100644
--- a/briar-core/src/main/java/org/briarproject/briar/introduction/IntroductionManagerImpl.java
+++ b/briar-core/src/main/java/org/briarproject/briar/introduction/IntroductionManagerImpl.java
@@ -580,8 +580,6 @@ class IntroductionManagerImpl extends ConversationClientImpl
 						.getMessageMetadataAsDictionary(txn, messageId);
 				MessageMetadata messageMetadata =
 						messageParser.parseMetadata(d);
-				if (!messageMetadata.isVisibleInConversation())
-					throw new IllegalArgumentException();
 				SessionId sessionId = messageMetadata.getSessionId();
 				DeletableSession deletableSession =
 						sessions.get(sessionId);