diff --git a/Feature-Matrix.md b/Feature-Matrix.md
index 1712806..b19fc5f 100644
--- a/Feature-Matrix.md
+++ b/Feature-Matrix.md
@@ -5,6 +5,7 @@
 | block                               | ✅ | ❌ | ✅<sup>3</sup>
 | daemon<sup>2</sup>                  | ✅ | ✅ | ✅
 | getUserStatus                       | ✅ | ✅ | ✅<sup>1, 13</sup>
+| isMember                            | ❌ | ❌ | ✅
 | joinGroup                           | ✅ | ❌ | ✅
 | link                                | ✅ | ❌ | ✅<sup>18</sup>
 | listContacts                        | ✅ | ❌ | ✅<sup>15</sup>
@@ -94,7 +95,6 @@
 | getSender                          | ✅ | ✅ | ✅
 | getSource                          | ✅ | ✅ | ✅
 | getTimestamp                       | ✅ | ✅ | ✅
-| isMember                           | ✅ | ✅ | ✅
 | isRegistered                       | ✅ | ✅ | ✅
 
 # With Attachment Data<sup>5</sup>