diff --git a/sop-java/src/main/java/sop/enums/SignatureMode.java b/sop-java/src/main/java/sop/enums/SignatureMode.java
deleted file mode 100644
index 71ce7d8..0000000
--- a/sop-java/src/main/java/sop/enums/SignatureMode.java
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.enums;
-
-/**
- * Enum referencing relevant signature types.
- *
- * @see <a href="https://www.rfc-editor.org/rfc/rfc4880#section-5.2.1">
- *     RFC4880 §5.2.1 - Signature Types</a>
- */
-public enum SignatureMode {
-    /**
-     * Signature of a binary document (<pre>0x00</pre>).
-     */
-    binary,
-
-    /**
-     * Signature of a canonical text document (<pre>0x01</pre>).
-     */
-    text
-
-    // Other Signature Types are irrelevant.
-}
diff --git a/sop-java/src/main/java/sop/enums/package-info.java b/sop-java/src/main/java/sop/enums/package-info.java
deleted file mode 100644
index 67148d3..0000000
--- a/sop-java/src/main/java/sop/enums/package-info.java
+++ /dev/null
@@ -1,9 +0,0 @@
-// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-/**
- * Stateless OpenPGP Interface for Java.
- * Enumerations.
- */
-package sop.enums;
diff --git a/sop-java/src/main/kotlin/sop/enums/SignatureMode.kt b/sop-java/src/main/kotlin/sop/enums/SignatureMode.kt
new file mode 100644
index 0000000..7213195
--- /dev/null
+++ b/sop-java/src/main/kotlin/sop/enums/SignatureMode.kt
@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.enums
+
+/**
+ * Enum referencing relevant signature types.
+ *
+ * @see <a href="https://www.rfc-editor.org/rfc/rfc4880#section-5.2.1"> RFC4880 §5.2.1 - Signature
+ *   Types</a>
+ */
+enum class SignatureMode {
+    /** Signature of a binary document (type `0x00`). */
+    binary,
+    /** Signature of a canonical text document (type `0x01`). */
+    text
+}