diff --git a/reactos/ntoskrnl/io/iomgr/error.c b/reactos/ntoskrnl/io/iomgr/error.c
index 749149ab481..4060e65306f 100644
--- a/reactos/ntoskrnl/io/iomgr/error.c
+++ b/reactos/ntoskrnl/io/iomgr/error.c
@@ -466,6 +466,8 @@ IopRaiseHardError(IN PKAPC Apc,
     //PVPB Vpb = (PVPB)SystemArgument1;
     //PDEVICE_OBJECT DeviceObject = (PDEVICE_OBJECT)SystemArgument2;
 
+    UNIMPLEMENTED;
+
     /* FIXME: UNIMPLEMENTED */
     Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
     Irp->IoStatus.Information = 0;