diff --git a/lib/services/block/reorg.js b/lib/services/block/reorg.js
index e4e714f8..0a4f8bcd 100644
--- a/lib/services/block/reorg.js
+++ b/lib/services/block/reorg.js
@@ -317,7 +317,7 @@ Reorg.prototype.findCommonAncestorAndNewHashes = function(oldTipHash, newTipHash
           }
 
           if(!mainPosition && !forkPosition) {
-            log.error('Unknown common ancestor');
+            return next('Unknown common ancestor');
           }
 
           next();