diff --git a/openmls/src/group/tests_and_kats/tests/proposal_validation.rs b/openmls/src/group/tests_and_kats/tests/proposal_validation.rs
index aba7dcdbe..56859ecdc 100644
--- a/openmls/src/group/tests_and_kats/tests/proposal_validation.rs
+++ b/openmls/src/group/tests_and_kats/tests/proposal_validation.rs
@@ -1046,11 +1046,11 @@ fn test_valsem105() {
     for key_package_version in [
         KeyPackageTestVersion::WrongCiphersuite,
         KeyPackageTestVersion::WrongVersion,
-        //KeyPackageTestVersion::UnsupportedVersion,
-        // KeyPackageTestVersion::UnsupportedCiphersuite,
+        KeyPackageTestVersion::UnsupportedVersion,
+        KeyPackageTestVersion::UnsupportedCiphersuite,
         KeyPackageTestVersion::ValidTestCase,
     ] {
-        println!("running test {key_package_version:?}");
+        println!("# running test {key_package_version:?}");
 
         // Let's set up a group with Alice and Bob as members.
         let ProposalValidationTestSetup {
diff --git a/openmls/src/treesync/node/leaf_node/capabilities.rs b/openmls/src/treesync/node/leaf_node/capabilities.rs
index a8d2a841f..302370976 100644
--- a/openmls/src/treesync/node/leaf_node/capabilities.rs
+++ b/openmls/src/treesync/node/leaf_node/capabilities.rs
@@ -175,8 +175,7 @@ impl Capabilities {
 
     /// Check if these [`Capabilities`] contains the credential.
     pub(crate) fn contains_credential(&self, credential_type: CredentialType) -> bool {
-        default_credentials().contains(&credential_type)
-            || self.credentials().contains(&credential_type)
+        self.credentials().contains(&credential_type)
     }
 
     /// Check if these [`Capabilities`] contain the extension.
@@ -191,17 +190,12 @@ impl Capabilities {
 
     /// Check if these [`Capabilities`] contain the version.
     pub(crate) fn contains_version(&self, version: ProtocolVersion) -> bool {
-        default_versions().contains(&version) || self.versions().contains(&version)
+        self.versions().contains(&version)
     }
 
     /// Check if these [`Capabilities`] contain the ciphersuite.
     pub(crate) fn contains_ciphersuite(&self, ciphersuite: VerifiableCiphersuite) -> bool {
-        let is_default = default_ciphersuites()
-            .into_iter()
-            .map(|c| c.into())
-            .any(|c: VerifiableCiphersuite| ciphersuite == c);
-
-        is_default || self.ciphersuites().contains(&ciphersuite)
+        self.ciphersuites().contains(&ciphersuite)
     }
 }