diff --git a/config/alfresco/workflow/workflow-messages_nl.properties b/config/alfresco/workflow/workflow-messages_nl.properties
index c289125f77..911ff05b07 100755
--- a/config/alfresco/workflow/workflow-messages_nl.properties
+++ b/config/alfresco/workflow/workflow-messages_nl.properties
@@ -227,4 +227,5 @@ listconstraint.wf_reviewOutcomeOptions.Reject=Afwijzen
 # The result of a workflow task seen on Workflow Details - History
 # This is formed by prefixing workflowtask.outcome to the value of the wf:outcome property
 workflowtask.outcome.Approve=Goedgekeurd
-workflowtask.outcome.Reject=Afgewezen
\ No newline at end of file
+workflowtask.outcome.Reject=Afgewezen
+workflowtask.already.done.error=Deze taak is al voltooid en kan niet langer worden bewerkt.
\ No newline at end of file