diff --git a/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageEncoder.java b/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageEncoder.java
index f95d44035..e8b3fc74f 100644
--- a/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageEncoder.java
+++ b/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageEncoder.java
@@ -6,4 +6,6 @@ public interface MessageEncoder {
 	byte[] encodeRevokeMessage();
 
 	byte[] encodeWipeMessage();
+
+	byte[] encodeConfirmMessage();
 }
diff --git a/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageType.java b/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageType.java
index 581c89640..afd925f53 100644
--- a/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageType.java
+++ b/briar-api/src/main/java/org/briarproject/briar/api/remotewipe/MessageType.java
@@ -9,7 +9,7 @@ import javax.annotation.concurrent.Immutable;
 @NotNullByDefault
 public enum MessageType {
 
-	SETUP(0), WIPE(1), REVOKE(2);
+	SETUP(0), WIPE(1), REVOKE(2), CONFIRM(3);
 
 	private final int value;