diff --git a/src/pcd.rs b/src/pcd.rs
index fc625e1..9cea82b 100644
--- a/src/pcd.rs
+++ b/src/pcd.rs
@@ -55,10 +55,10 @@ impl Member {
         self.sp_addresses.clone()
     }
 
-    pub fn key_is_part_of_member(&self, key: &XOnlyPublicKey) -> bool {
+    pub fn key_is_part_of_member(&self, key: &PublicKey) -> bool {
         self.sp_addresses.iter().any(|a| {
             let addr = SilentPaymentAddress::try_from(a.as_str()).unwrap();
-            addr.get_spend_key().x_only_public_key().0 == *key
+            addr.get_spend_key() == *key
         })
     }
 }