diff --git a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
index 29cc0d1a0..47aed901f 100644
--- a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
+++ b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
@@ -1211,7 +1211,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     {
       // Make sure that client is updated with the right syncKey. - This keeps vtodo's and vevent's syncKey in sync.
       syncKeyInCache = [folderMetadata  objectForKey: @"SyncKey"];
-      if (syncKeyInCache && !([davCollectionTag isEqualToString:syncKeyInCache]))
+      if (syncKeyInCache && !([davCollectionTag isEqualToString:syncKeyInCache]) && ![davCollectionTag isEqualToString: @"-1"])
         {
           davCollectionTag = syncKeyInCache;
           *changeDetected = YES;
diff --git a/NEWS b/NEWS
index 87c1e1c18..eac001565 100644
--- a/NEWS
+++ b/NEWS
@@ -10,6 +10,7 @@ Bug fixes
  - fixed tasks disappearing issue with RoadSync
  - use the correct body element for events for EAS 2.5 clients
  - SmartReply improvements for missing body attributes
+ - do not use syncKey from cache when davCollectionTag = -1
 
 2.2.16 (2015-02-12)
 -------------------