diff --git a/external-sop/src/main/kotlin/sop/external/operation/EncryptExternal.kt b/external-sop/src/main/kotlin/sop/external/operation/EncryptExternal.kt
index 12d9cff..679e09b 100644
--- a/external-sop/src/main/kotlin/sop/external/operation/EncryptExternal.kt
+++ b/external-sop/src/main/kotlin/sop/external/operation/EncryptExternal.kt
@@ -37,7 +37,7 @@ class EncryptExternal(
 
     override fun signWith(key: InputStream): Encrypt = apply {
         commandList.add("--sign-with=@ENV:SIGN_WITH_$argCounter")
-        envList.add("SIGN_WITH_$argCounter=${ExternalSOP.readString(key)}")
+        envList.add("SIGN_WITH_$argCounter=${readString(key)}")
         argCounter += 1
     }
 
diff --git a/sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopCLI.kt b/sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopCLI.kt
index b919370..62065f4 100644
--- a/sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopCLI.kt
+++ b/sop-java-picocli/src/main/kotlin/sop/cli/picocli/SopCLI.kt
@@ -60,7 +60,7 @@ class SopCLI {
         @JvmField var EXECUTABLE_NAME = "sop"
 
         @JvmField
-        @Option(names = ["--stacktrace"], scope = CommandLine.ScopeType.INHERIT)
+        @Option(names = ["--stacktrace"], scope = ScopeType.INHERIT)
         var stacktrace = false
 
         @JvmStatic
diff --git a/sop-java/src/main/kotlin/sop/SigningResult.kt b/sop-java/src/main/kotlin/sop/SigningResult.kt
index 29304ea..60888e0 100644
--- a/sop-java/src/main/kotlin/sop/SigningResult.kt
+++ b/sop-java/src/main/kotlin/sop/SigningResult.kt
@@ -9,8 +9,9 @@ package sop
  *
  * @param micAlg string identifying the digest mechanism used to create the signed message. This is
  *   useful for setting the `micalg=` parameter for the multipart/signed content-type of a PGP/MIME
- *   object as described in section 5 of [RFC3156]. If more than one signature was generated and
- *   different digest mechanisms were used, the value of the micalg object is an empty string.
+ *   object as described in section 5 of [RFC3156](https://www.rfc-editor.org/rfc/rfc3156#section-5).
+ *   If more than one signature was generated and different digest mechanisms were used, the value
+ *   of the micalg object is an empty string.
  */
 data class SigningResult(val micAlg: MicAlg) {
 
diff --git a/sop-java/src/main/kotlin/sop/operation/GenerateKey.kt b/sop-java/src/main/kotlin/sop/operation/GenerateKey.kt
index 3b83b99..13de39a 100644
--- a/sop-java/src/main/kotlin/sop/operation/GenerateKey.kt
+++ b/sop-java/src/main/kotlin/sop/operation/GenerateKey.kt
@@ -78,7 +78,7 @@ interface GenerateKey {
     fun signingOnly(): GenerateKey
 
     /**
-     * Generate the OpenPGP key and return it encoded as an [InputStream].
+     * Generate the OpenPGP key and return it encoded as an [java.io.InputStream].
      *
      * @return key
      * @throws MissingArg if no user-id was provided