diff --git a/bds/source/java/ch/systemsx/cisd/bds/DataSet.java b/bds/source/java/ch/systemsx/cisd/bds/DataSet.java
index 8095e3bcbda94b21c453322f0590880d46aa4e24..3f1a09ec07039a6a56e9d92cc1d2fadd6519e932 100644
--- a/bds/source/java/ch/systemsx/cisd/bds/DataSet.java
+++ b/bds/source/java/ch/systemsx/cisd/bds/DataSet.java
@@ -22,11 +22,11 @@ import java.util.Collections;
 import java.util.Date;
 import java.util.List;
 
-import types.BooleanOrUnknown;
 
 import ch.systemsx.cisd.bds.exception.DataStructureException;
 import ch.systemsx.cisd.bds.storage.IDirectory;
 import ch.systemsx.cisd.common.collections.CollectionIO;
+import ch.systemsx.cisd.common.types.BooleanOrUnknown;
 
 /**
  * Identifier of the data set. This is an immutable but extendable value object class. An instance
diff --git a/common/source/java/types/BooleanOrUnknown.java b/common/source/java/ch/systemsx/cisd/common/types/BooleanOrUnknown.java
similarity index 98%
rename from common/source/java/types/BooleanOrUnknown.java
rename to common/source/java/ch/systemsx/cisd/common/types/BooleanOrUnknown.java
index d1f354951c21b8410e2c6ec99aa266ce08d20719..1c963cb27ae23baac3c69840d12e7566b7e71e22 100644
--- a/common/source/java/types/BooleanOrUnknown.java
+++ b/common/source/java/ch/systemsx/cisd/common/types/BooleanOrUnknown.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package types;
+package ch.systemsx.cisd.common.types;
 
 /**
  * A type which represents a boolean which is third state <code>UNKNOWN</code>. It additionally