diff --git a/scl-extension/src/main/java/org/lfenergy/compas/scl/extensions/model/SclFileType.java b/scl-extension/src/main/java/org/lfenergy/compas/scl/extensions/model/SclFileType.java
index f1115f7..f215395 100644
--- a/scl-extension/src/main/java/org/lfenergy/compas/scl/extensions/model/SclFileType.java
+++ b/scl-extension/src/main/java/org/lfenergy/compas/scl/extensions/model/SclFileType.java
@@ -18,7 +18,8 @@ public enum SclFileType {
     CID("Configured IED Description"),
     SED("System Exchange Description"),
     ISD("IED Specification Description"),
-    STD("System Template Definition");
+    STD("System Template Definition"),
+    FSD("Function Specification Description");
 
     private final String description;