diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/SqlUnitMigrationTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/SqlUnitMigrationTest.java
index f51835390b7f707cf2ff8a2019b82c069483a487..c729d157f509c69dc8a28e695569747729259784 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/SqlUnitMigrationTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/SqlUnitMigrationTest.java
@@ -158,12 +158,13 @@ public final class SqlUnitMigrationTest
         }
 
         // NOTE: the following methods are needed because we compile with JDK 6 on Hudson
-
+        @SuppressWarnings("unused")
         public boolean isWrapperFor(Class<?> arg0) throws SQLException
         {
             return false;
         }
 
+        @SuppressWarnings("unused")
         public <T> T unwrap(Class<T> arg0) throws SQLException
         {
             return null;