diff --git a/src/main/java/eu/dnetlib/repo/manager/service/RepositoryServiceImpl.java b/src/main/java/eu/dnetlib/repo/manager/service/RepositoryServiceImpl.java
index ff1f7fd..8ea7a45 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/RepositoryServiceImpl.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/RepositoryServiceImpl.java
@@ -728,7 +728,7 @@ public class RepositoryServiceImpl implements RepositoryService {
 
         // TODO: double check me
         logger.warn("Compatibility level: {}", iFace.getCompatibility());
-        if (iFace.getCompatibility() != null && iFace.getCompatibility().equals("")) {
+        if (iFace.getCompatibility() == null || iFace.getCompatibility().equals("")) {
             iFace.setCompatibility("UNKNOWN");
         }