diff --git a/docs/ref-supported.md b/docs/ref-supported.md
index 30dc92eeb..7f4645cdb 100644
--- a/docs/ref-supported.md
+++ b/docs/ref-supported.md
@@ -60,6 +60,7 @@ SFPI | Form Object: Interface | Yes
 SFSW | Switch + Assignment of Objects to the Switch | Yes
 SHI3 | General structure storage: Definition of a structure | Yes
 SHI5 | Gen. hierarchy storage extrension name | Yes
+SHI8 | SFW Switch Assignment in Hierarchy Tool | Yes
 SHLP | Search Help | Yes
 SHMA | Shared Objects: Defined Area Attributes | Yes
 SICF | ICF Service | Yes