diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/CommonServer.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/CommonServer.java
index 80f46946fac93e5ca1cd85497cf167bd71182085..a17a51fd250719a30638738d4666b967612e380a 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/CommonServer.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/server/CommonServer.java
@@ -3612,6 +3612,7 @@ public final class CommonServer extends AbstractCommonServer<ICommonServerForInt
     }
 
     @Override
+    @RolesAllowed(RoleWithHierarchy.SPACE_USER)
     public MetaprojectAssignmentsCount getMetaprojectAssignmentsCount(String sessionToken,
             IMetaprojectId metaprojectId)
     {