diff --git a/src/main/java/info/bukova/isspst/Constants.java b/src/main/java/info/bukova/isspst/Constants.java
index 024e15f1..316a9b26 100644
--- a/src/main/java/info/bukova/isspst/Constants.java
+++ b/src/main/java/info/bukova/isspst/Constants.java
@@ -30,7 +30,7 @@ import java.util.Map;
 
 public class Constants {
 
-	public final static long DB_VERSION = 1;
+	public final static long DB_VERSION = 2;
 
 	public final static String DEF_ADMIN = "admin";
 	public final static String DEF_ADMIN_PASSWD = "admin";
diff --git a/src/main/java/info/bukova/isspst/data/MUnitEmb.java b/src/main/java/info/bukova/isspst/data/MUnitEmb.java
index 710ba805..934d54eb 100644
--- a/src/main/java/info/bukova/isspst/data/MUnitEmb.java
+++ b/src/main/java/info/bukova/isspst/data/MUnitEmb.java
@@ -20,6 +20,9 @@ public class MUnitEmb
 
 	public MUnitEmb()
 	{
+		// Embeddable object is loaded by hibernate like NULL, if all properties
+		// are NULL. So, we set ID.
+		this.id = 0;
 	}
 
 	public MUnitEmb(MUnit munit)
diff --git a/src/main/java/info/bukova/isspst/services/dbinfo/DbInfoServiceImpl.java b/src/main/java/info/bukova/isspst/services/dbinfo/DbInfoServiceImpl.java
index a859a28e..4203419a 100644
--- a/src/main/java/info/bukova/isspst/services/dbinfo/DbInfoServiceImpl.java
+++ b/src/main/java/info/bukova/isspst/services/dbinfo/DbInfoServiceImpl.java
@@ -64,9 +64,13 @@ public class DbInfoServiceImpl extends AbstractService<DbInfo> implements DbInfo
 
 		if (Constants.DB_VERSION > dbVersion)
 		{
+			SQLQuery sq = null;
+			String sql = "";
+
 			if (dbVersion < 1)
 			{
 				List<Str2Str> tables = new ArrayList<Str2Str>();
+
 				tables.add(new Str2Str("address", "DESCRIPTION"));
 				tables.add(new Str2Str("building", "DESCRIPTION"));
 				tables.add(new Str2Str("material", "DESCRIPTION"));
@@ -90,9 +94,6 @@ public class DbInfoServiceImpl extends AbstractService<DbInfo> implements DbInfo
 				tables.add(new Str2Str("triprequirement", "VEHICLE_DESCRIPTION"));
 				tables.add(new Str2Str("trip_bill_items", "BACK_VEHICLE_DESCRIPTION"));
 				tables.add(new Str2Str("trip_bill_items", "VEHICLE_DESCRIPTION"));
-				
-				SQLQuery sq = null;
-				String sql = "";
 
 				for (Str2Str item : tables)
 				{
@@ -102,6 +103,22 @@ public class DbInfoServiceImpl extends AbstractService<DbInfo> implements DbInfo
 				}
 			}
 
+			if (dbVersion < 2)
+			{
+				List<String> tables = new ArrayList<String>();
+
+				tables.add("material");
+				tables.add("order_item");
+				tables.add("requirement_items");
+				
+				for (String item : tables)
+				{
+					sql = "UPDATE " + item + " SET MUNIT_ID = 0 WHERE (MUNIT_ID Is NULL) ";
+					sq = this.dao.getSession().createSQLQuery(sql);
+					sq.executeUpdate();
+				}
+			}
+
 			this.updateDatabaseVersion();
 		}
 	}
diff --git a/src/main/java/info/bukova/isspst/ui/main/orders/requirements/RequirementForm.java b/src/main/java/info/bukova/isspst/ui/main/orders/requirements/RequirementForm.java
index cfb6409e..c3e96ec9 100644
--- a/src/main/java/info/bukova/isspst/ui/main/orders/requirements/RequirementForm.java
+++ b/src/main/java/info/bukova/isspst/ui/main/orders/requirements/RequirementForm.java
@@ -183,7 +183,14 @@ public class RequirementForm extends FormViewModel<Requirement>
 			if (isMaterial)
 			{
 				Material materialItem = (Material) selected;
-				item.setMunit(materialItem.getMunit());
+				MUnitEmb unit = materialItem.getMunit();
+
+				// if (unit == null)
+				// {
+				// unit = new MUnitEmb();
+				// }
+
+				item.setMunit(unit);
 			}
 
 			this.setSelectedItem(item);