diff --git a/rs-matter/src/data_model/objects/attribute.rs b/rs-matter/src/data_model/objects/attribute.rs
index 69fd544..5eadb0e 100644
--- a/rs-matter/src/data_model/objects/attribute.rs
+++ b/rs-matter/src/data_model/objects/attribute.rs
@@ -72,10 +72,10 @@ bitflags! {
     #[derive(Default)]
     pub struct Quality: u8 {
         const NONE = 0x00;
-        const SCENE = 0x01;
-        const PERSISTENT = 0x02;
-        const FIXED = 0x03;
-        const NULLABLE = 0x04;
+        const SCENE = 0x01;      // Short: S
+        const PERSISTENT = 0x02; // Short: N
+        const FIXED = 0x04;      // Short: F
+        const NULLABLE = 0x08;   // Short: X
     }
 }