diff --git a/pgpainless-core/src/main/java/org/pgpainless/exception/NotYetImplementedException.java b/pgpainless-core/src/main/java/org/pgpainless/exception/NotYetImplementedException.java
deleted file mode 100644
index 72f9b569..00000000
--- a/pgpainless-core/src/main/java/org/pgpainless/exception/NotYetImplementedException.java
+++ /dev/null
@@ -1,12 +0,0 @@
-// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package org.pgpainless.exception;
-
-/**
- * Method that gets thrown if the user requests some functionality which is not yet implemented.
- */
-public class NotYetImplementedException extends RuntimeException {
-
-}
diff --git a/pgpainless-core/src/main/java/org/pgpainless/key/util/KeyRingUtils.java b/pgpainless-core/src/main/java/org/pgpainless/key/util/KeyRingUtils.java
index 8306db34..21c5b575 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/key/util/KeyRingUtils.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/key/util/KeyRingUtils.java
@@ -26,7 +26,6 @@ import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
 import org.bouncycastle.openpgp.PGPSignature;
 import org.bouncycastle.openpgp.PGPUserAttributeSubpacketVector;
 import org.pgpainless.PGPainless;
-import org.pgpainless.exception.NotYetImplementedException;
 import org.pgpainless.implementation.ImplementationFactory;
 import org.pgpainless.key.protection.SecretKeyRingProtector;
 import org.pgpainless.key.protection.UnlockSecretKey;
@@ -354,8 +353,6 @@ public final class KeyRingUtils {
     /**
      * Inject a {@link PGPPublicKey} into the given key ring.
      *
-     * Note: Right now this method is broken and will throw a {@link NotYetImplementedException}.
-     *
      * @param keyRing key ring
      * @param publicKey public key
      * @param <T> either {@link PGPPublicKeyRing} or {@link PGPSecretKeyRing}