diff --git a/pgpainless-core/src/main/kotlin/org/pgpainless/key/util/KeyRingUtils.kt b/pgpainless-core/src/main/kotlin/org/pgpainless/key/util/KeyRingUtils.kt
index 2286da28..d788d1f9 100644
--- a/pgpainless-core/src/main/kotlin/org/pgpainless/key/util/KeyRingUtils.kt
+++ b/pgpainless-core/src/main/kotlin/org/pgpainless/key/util/KeyRingUtils.kt
@@ -39,7 +39,7 @@ class KeyRingUtils {
             "Deprecated in favor of PGPSecretKeyRing extension function.",
             ReplaceWith("secretKeys.requireSecretKey(keyId)"))
         fun requirePrimarySecretKeyFrom(secretKeys: PGPSecretKeyRing): PGPSecretKey {
-            return secretKeys.requireSecretKey(secretKeys.publicKey.keyID)
+            return secretKeys.requireSecretKey(secretKeys.publicKey.keyIdentifier)
         }
 
         /**