diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
index b123aa810..b627ecefd 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/AdvancedAllocationController.java
@@ -484,7 +484,7 @@ class Row {
     }
 
     private boolean isGroupingRow() {
-        return level == 0;
+        return aggregate.getAllocationsSortedByStartDate().size() > 1;
     }
 
 }