diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/materials/bootstrap/UnitTypeBootstrap.java b/navalplanner-business/src/main/java/org/navalplanner/business/materials/bootstrap/UnitTypeBootstrap.java
index 5994d1b0a..2dc5f7666 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/materials/bootstrap/UnitTypeBootstrap.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/materials/bootstrap/UnitTypeBootstrap.java
@@ -65,6 +65,9 @@ public class UnitTypeBootstrap implements IDataBootstrap {
     }
 
     public static UnitType getDefaultUnitType() {
+        if (defaultUnitType.isNewObject()) {
+            defaultUnitType.dontPoseAsTransientObjectAnymore();
+        }
         return defaultUnitType;
     }
 }