diff --git a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
index 06886d343..bb34ca5da 100644
--- a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
+++ b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
@@ -119,7 +119,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 {
   SOGoCacheGCSObject *o;
   NSNumber *processIdentifier;
-  NSString *key;
+  NSString *key, *collectionId;;
   int i;
 
   processIdentifier = [NSNumber numberWithInt: [[NSProcessInfo processInfo] processIdentifier]];
@@ -139,7 +139,13 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
       for (i = 0; i < [collections count]; i++)
         {
-          key = [NSString stringWithFormat: @"SyncRequest+%@", [[[(id)[[collections objectAtIndex: i] getElementsByTagName: @"CollectionId"] lastObject] textValue] stringByUnescapingURL]];
+          if ([[collections objectAtIndex: i] isKindOfClass: [NSString class]])
+            collectionId = [collections objectAtIndex: i];
+          else
+            collectionId = [[[(id)[[collections objectAtIndex: i] getElementsByTagName: @"CollectionId"] lastObject] textValue] stringByUnescapingURL];
+
+          key = [NSString stringWithFormat: @"SyncRequest+%@", collectionId];
+
           [[o properties] setObject: processIdentifier forKey: key];
         }
     }
@@ -148,7 +154,13 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
       [[o properties] removeObjectForKey: @"SyncRequest"];
       for (i = 0; i < [collections count]; i++)
         {
-          key = [NSString stringWithFormat: @"SyncRequest+%@", [[[(id)[[collections objectAtIndex: i] getElementsByTagName: @"CollectionId"] lastObject] textValue] stringByUnescapingURL]];
+          if ([[collections objectAtIndex: i] isKindOfClass: [NSString class]])
+            collectionId = [collections objectAtIndex: i];
+          else
+            collectionId = [[[(id)[[collections objectAtIndex: i] getElementsByTagName: @"CollectionId"] lastObject] textValue] stringByUnescapingURL];
+
+          key = [NSString stringWithFormat: @"SyncRequest+%@", collectionId];
+
           [[o properties] removeObjectForKey: key];
         }
     }