diff --git a/core/src/main/java/ru/trader/analysis/Route.java b/core/src/main/java/ru/trader/analysis/Route.java
index af5887d..56a1ebd 100644
--- a/core/src/main/java/ru/trader/analysis/Route.java
+++ b/core/src/main/java/ru/trader/analysis/Route.java
@@ -174,6 +174,7 @@ public class Route implements Comparable<Route> {
 
     public void join(Route route){
         LOG.trace("Join route {}", route);
+        if (route.isEmpty()) return;
         RouteEntry end = entries.get(entries.size()-1);
         if (route.entries.get(0).is(end.getVendor())){
             entries.remove(entries.size()-1);