From 30aff823414b1d35ec79e6f3b530cd2ec22a3720 Mon Sep 17 00:00:00 2001
From: Moxie Marlinspike <moxie@thoughtcrime.org>
Date: Mon, 24 Nov 2014 11:37:28 -0800
Subject: [PATCH] The future is the other direction.

// FREEBIE
---
 .../main/java/org/whispersystems/libaxolotl/SessionCipher.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libaxolotl/src/main/java/org/whispersystems/libaxolotl/SessionCipher.java b/libaxolotl/src/main/java/org/whispersystems/libaxolotl/SessionCipher.java
index 43e90d3c78..13bdc25b79 100644
--- a/libaxolotl/src/main/java/org/whispersystems/libaxolotl/SessionCipher.java
+++ b/libaxolotl/src/main/java/org/whispersystems/libaxolotl/SessionCipher.java
@@ -324,7 +324,7 @@ public class SessionCipher {
       }
     }
 
-    if (chainKey.getIndex() - counter > 2000) {
+    if (counter - chainKey.getIndex() > 2000) {
       throw new InvalidMessageException("Over 2000 messages into the future!");
     }