diff --git a/docs/plantuml/sdei_explicit_dispatch.puml b/docs/plantuml/sdei_explicit_dispatch.puml
index c80fcd1..90ff23c 100644
--- a/docs/plantuml/sdei_explicit_dispatch.puml
+++ b/docs/plantuml/sdei_explicit_dispatch.puml
@@ -1,5 +1,5 @@
 /'
- ' Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ ' Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  '
  ' SPDX-License-Identifier: BSD-3-Clause
  '/
@@ -9,7 +9,8 @@
 autonumber "<b>[#]</b>"
 participant "SDEI client" as EL2
 participant EL3
-participant "Secure Partition" as SP
+participant SDEI
+participant "RAS Driver" as RAS
 
 activate EL2
 EL2->EL3: **SDEI_EVENT_REGISTER**(ev, handler, ...)
@@ -24,21 +25,26 @@
 EL3<--]: **CRITICAL EVENT**
 activate EL3 #red
 note over EL3: Critical event triage
-EL3->SP: dispatch
-activate SP #salmon
-note over SP: Critical event handling
-SP->EL3: done
-deactivate SP
-EL3-->EL3: sdei_dispatch_event(ev)
-note over EL3: Prepare SDEI dispatch
-EL3->EL2: dispatch
+EL3->RAS: dispatch to handle
+deactivate EL3
+activate RAS #salmon
+note over RAS: Critical event handling
+RAS-->SDEI: sdei_dispatch_event(ev)
+deactivate RAS
+activate SDEI #salmon
+note over SDEI: Prepare SDEI dispatch
+SDEI->EL2: dispatch
 activate EL2 #salmon
 note over EL2: SDEI handler
-EL2->EL3: **SDEI_EVENT_COMPLETE()**
+EL2->SDEI: **SDEI_EVENT_COMPLETE()**
 deactivate EL2
-note over EL3: Complete SDEI dispatch
+note over SDEI: Complete SDEI dispatch
+SDEI-->RAS: return
+deactivate SDEI
+activate RAS #salmon
+RAS->EL3: error handling done
+deactivate RAS
 EL3->EL2: resumes preempted execution
-deactivate EL3
 
 ... <<Normal execution resumes>> ...