diff --git a/sop-java-picocli/src/main/resources/msg_sop.properties b/sop-java-picocli/src/main/resources/msg_sop.properties
index 1660a34..d01e67f 100644
--- a/sop-java-picocli/src/main/resources/msg_sop.properties
+++ b/sop-java-picocli/src/main/resources/msg_sop.properties
@@ -52,7 +52,7 @@ sop.error.indirect_data_type.input_file_does_not_exist=Input file '%s' does not
 sop.error.indirect_data_type.input_not_a_file=Input file '%s' is not a file.
 sop.error.indirect_data_type.output_file_already_exists=Output file '%s' already exists.
 sop.error.indirect_data_type.output_file_cannot_be_created=Output file '%s' cannot be created.
-sop.error.indirect_data_type.illegal_use_of_env_designator=Special designator '@ENV:' cannot be used for output.
+sop.error.indirect_data_type.illegal_use_of_env_designator=Special designator '@ENV' cannot be used for output.
 sop.error.indirect_data_type.designator_env_not_supported=Special designator '@ENV' is not supported.
 sop.error.indirect_data_type.designator_fd_not_supported=Special designator '@FD' is not supported.
 ## Runtime Errors
diff --git a/sop-java-picocli/src/main/resources/msg_sop_de.properties b/sop-java-picocli/src/main/resources/msg_sop_de.properties
index 2da8e89..a54fa7e 100644
--- a/sop-java-picocli/src/main/resources/msg_sop_de.properties
+++ b/sop-java-picocli/src/main/resources/msg_sop_de.properties
@@ -52,7 +52,7 @@ sop.error.indirect_data_type.input_file_does_not_exist=Quelldatei '%s' existiert
 sop.error.indirect_data_type.input_not_a_file=Quelldatei '%s' ist keine Datei.
 sop.error.indirect_data_type.output_file_already_exists=Zieldatei '%s' existiert bereits.
 sop.error.indirect_data_type.output_file_cannot_be_created=Zieldatei '%s' kann nicht erstellt werden.
-sop.error.indirect_data_type.illegal_use_of_env_designator=Besonderer Bezeichner-Präfix '@ENV:' darf nicht für Ausgaben verwendet werden.
+sop.error.indirect_data_type.illegal_use_of_env_designator=Besonderer Bezeichner-Präfix '@ENV' darf nicht für Ausgaben verwendet werden.
 sop.error.indirect_data_type.designator_env_not_supported=Besonderer Bezeichner-Präfix '@ENV' wird nicht unterstützt.
 sop.error.indirect_data_type.designator_fd_not_supported=Besonderer Bezeichner-Präfix '@FD' wird nicht unterstützt.
 ## Runtime Errors