diff --git a/briar-api/src/org/briarproject/api/sharing/SharingConstants.java b/briar-api/src/org/briarproject/api/sharing/SharingConstants.java
index 8826b524bb00a9c13e648dd1e95855b2a21ea8f4..de49d674a94d855bc71e06fe09f1af4461da0d46 100644
--- a/briar-api/src/org/briarproject/api/sharing/SharingConstants.java
+++ b/briar-api/src/org/briarproject/api/sharing/SharingConstants.java
@@ -13,7 +13,7 @@ public interface SharingConstants {
 	 * The maximum length of the optional message from the inviter to the
 	 * invitee in UTF-8 bytes.
 	 */
-	int MAX_INVITATION_MESSAGE_LENGTH = MAX_MESSAGE_BODY_LENGTH - 1204;
+	int MAX_INVITATION_MESSAGE_LENGTH = MAX_MESSAGE_BODY_LENGTH - 1024;
 
 	String CONTACT_ID = "contactId";
 	String GROUP_ID = "groupId";