diff --git a/sop-java-picocli/src/main/resources/msg_merge-certs.properties b/sop-java-picocli/src/main/resources/msg_merge-certs.properties
index b01f577..8c0bfa3 100644
--- a/sop-java-picocli/src/main/resources/msg_merge-certs.properties
+++ b/sop-java-picocli/src/main/resources/msg_merge-certs.properties
@@ -2,7 +2,8 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 usage.headerHeading=Merge OpenPGP certificates%n
-usage.description=BLABLA
+usage.header=Merge OpenPGP certificates from standard input with related elements from CERTS and emit the result to standard output
+usage.description=Only certificates that were part of standard input will be emitted to standard output
 no-armor=ASCII armor the output
 CERTS[0..*]=OpenPGP certificates from which updates shall be merged into the base certificates from standard input