diff --git a/rm-community/rm-community-repo/unit-test/java/org/alfresco/module/org_alfresco_module_rm/test/util/MockAuthenticationUtilHelper.java b/rm-community/rm-community-repo/unit-test/java/org/alfresco/module/org_alfresco_module_rm/test/util/MockAuthenticationUtilHelper.java
index e7372e5585..5e5308307b 100644
--- a/rm-community/rm-community-repo/unit-test/java/org/alfresco/module/org_alfresco_module_rm/test/util/MockAuthenticationUtilHelper.java
+++ b/rm-community/rm-community-repo/unit-test/java/org/alfresco/module/org_alfresco_module_rm/test/util/MockAuthenticationUtilHelper.java
@@ -99,5 +99,6 @@ public class MockAuthenticationUtilHelper
         when(mockAuthenticationUtil.getFullyAuthenticatedUser()).thenReturn(fullyAuthenticatedUser);
         when(mockAuthenticationUtil.getRunAsUser()).thenReturn(fullyAuthenticatedUser);
         when(mockAuthenticationUtil.getSystemUserName()).thenReturn("system");
+        when(mockAuthenticationUtil.getGuestUserName()).thenReturn("guest");
     }
 }