diff --git a/centreon-plugins/cloud/prometheus/restapi/mode/expression.pm b/centreon-plugins/cloud/prometheus/restapi/mode/expression.pm
index 1b4c9c78c..5ba3297bc 100644
--- a/centreon-plugins/cloud/prometheus/restapi/mode/expression.pm
+++ b/centreon-plugins/cloud/prometheus/restapi/mode/expression.pm
@@ -231,12 +231,12 @@ Set the instance label on which the results should be calculate for (Example: --
 
 =item B<--output>
 
-Set the output for each instances (Example: --output='Container %{instance} value is {label}').
+Set the output for each instances (Example: --output='Container %{instance} value is %{label}').
 
 =item B<--multiple-output>
 
 Set the global output in case everything is fine for multiple instances
-(Example: --multiple-output='Container %{instance} value is {label}').
+(Example: --multiple-output='Containers are OK').
 
 =item B<--warning-status>