diff --git a/docs/resources/diagrams/plantuml/io_dev_init_and_check.puml b/docs/resources/diagrams/plantuml/io_dev_init_and_check.puml
index 2752b3326e51b022a7909dea687c382e4224bc59..b7289a2462fd48aef8309f8f177edfc9958991be 100644
--- a/docs/resources/diagrams/plantuml/io_dev_init_and_check.puml
+++ b/docs/resources/diagrams/plantuml/io_dev_init_and_check.puml
@@ -1,7 +1,7 @@
 @startuml
 
-participant arm_io_storage order 1
-participant io_storage order 2
+participant arm_io_storage
+participant io_storage
 
  -> arm_io_storage : plat_get_image_source(image_id, &dev_handle, &image_spec)
 
diff --git a/docs/resources/diagrams/plantuml/io_dev_registration.puml b/docs/resources/diagrams/plantuml/io_dev_registration.puml
index 114c3b7783a152482d469a1d6e8477d1646eb632..c6f330e6af32c7be9b19e350a2f908fb292f93cb 100644
--- a/docs/resources/diagrams/plantuml/io_dev_registration.puml
+++ b/docs/resources/diagrams/plantuml/io_dev_registration.puml
@@ -1,9 +1,9 @@
 @startuml
 
-participant arm_io_storage order 1
-participant io_storage order 2
-participant io_fip order 3
-participant io_memmap order 4
+participant arm_io_storage
+participant io_storage
+participant io_fip
+participant io_memmap
 
  -> arm_io_storage : arm_io_setup()
 
diff --git a/docs/resources/diagrams/plantuml/io_framework_usage_overview.puml b/docs/resources/diagrams/plantuml/io_framework_usage_overview.puml
index eb3e2b4c7e306182cf3971aeb840659c1529785c..b21a0ae5d6bfd6d4cf4ff3510bb89578f4f309e5 100644
--- a/docs/resources/diagrams/plantuml/io_framework_usage_overview.puml
+++ b/docs/resources/diagrams/plantuml/io_framework_usage_overview.puml
@@ -1,8 +1,8 @@
 @startuml
 
-participant bl_common order 1
-participant arm_io_storage order 2
-participant io_storage order 3
+participant bl_common
+participant arm_io_storage
+participant io_storage
 
 == Platform Setup ==