diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/Utils.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/Utils.java
index 9ab99a202..ec18752a6 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/Utils.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/Utils.java
@@ -9,7 +9,7 @@ import org.apache.spark.sql.SparkSession;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.common.HdfsSupport;
-import eu.dnetlib.dhp.schema.dump.oaf.graph.Constants;
+import eu.dnetlib.dhp.oa.graph.dump.graph.Constants;
 import eu.dnetlib.dhp.utils.DHPUtils;
 import eu.dnetlib.dhp.utils.ISLookupClientFactory;
 import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpService;
@@ -37,7 +37,7 @@ public class Utils {
 
 		return String
 			.format(
-				"%s|%s::%s", eu.dnetlib.dhp.schema.dump.oaf.graph.Constants.CONTEXT_ID, Constants.CONTEXT_NS_PREFIX,
+				"%s|%s::%s", Constants.CONTEXT_ID, Constants.CONTEXT_NS_PREFIX,
 				DHPUtils.md5(id));
 	}
 }