diff --git a/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/postgis/PostgisIndex.java b/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/postgis/PostgisIndex.java
index 514ebb8..e21fcc2 100644
--- a/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/postgis/PostgisIndex.java
+++ b/geoportal-service/src/main/java/org/gcube/application/geoportal/service/engine/postgis/PostgisIndex.java
@@ -38,7 +38,7 @@ public class PostgisIndex {
 
 	private SDIManager sdiManager;
 	private String wmsLink=null;
-	private static PostgisDBManager getDB() throws ConfigurationException {
+	private static PostgisDBManagerI getDB() throws ConfigurationException {
 		return ImplementationProvider.get().getDbProvider().getObject();
 	};