diff --git a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineSignCmd.java b/sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineSignCmd.java
index 7e7c8af..773e6af 100644
--- a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineSignCmd.java
+++ b/sop-java-picocli/src/main/java/sop/cli/picocli/commands/InlineSignCmd.java
@@ -41,6 +41,7 @@ public class InlineSignCmd extends AbstractSopCmd {
         InlineSign inlineSign = throwIfUnsupportedSubcommand(
                 SopCLI.getSop().inlineSign(), "inline-sign");
 
+        // Clearsigned messages are inherently armored, so --no-armor makes no sense.
         if (!armor && type == InlineSignAs.clearsigned) {
             String errorMsg = getMsg("sop.error.usage.incompatible_options.clearsigned_no_armor");
             throw new SOPGPException.IncompatibleOptions(errorMsg);