diff --git a/cmd/csaf_downloader/main.go b/cmd/csaf_downloader/main.go
index 2a2fd67..9867748 100644
--- a/cmd/csaf_downloader/main.go
+++ b/cmd/csaf_downloader/main.go
@@ -27,7 +27,7 @@ type options struct {
 
 	RemoteValidator        string   `long:"validator" description:"URL to validate documents remotely" value-name:"URL"`
 	RemoteValidatorCache   string   `long:"validatorcache" description:"FILE to cache remote validations" value-name:"FILE"`
-	RemoteValidatorPresets []string `long:"validatorpreset" description:"One or more presets to validate remotely"`
+	RemoteValidatorPresets []string `long:"validatorpreset" description:"One or more presets to validate remotely" default:"mandatory"`
 }
 
 func errCheck(err error) {
diff --git a/docs/csaf_downloader.md b/docs/csaf_downloader.md
index ab30586..854bd3a 100644
--- a/docs/csaf_downloader.md
+++ b/docs/csaf_downloader.md
@@ -15,7 +15,7 @@ Application Options:
   -r, --rate=                  The average upper limit of https operations per second
       --validator=URL          URL to validate documents remotely
       --validatorcache=FILE    FILE to cache remote validations
-      --validatorpreset=       One or more presets to validate remotely
+      --validatorpreset=       One or more presets to validate remotely (default: mandatory)
 
 Help Options:
   -h, --help                   Show this help message