diff --git a/core/Command/Security/ImportCertificate.php b/core/Command/Security/ImportCertificate.php
index 836f1e8b9d..e134f0f589 100644
--- a/core/Command/Security/ImportCertificate.php
+++ b/core/Command/Security/ImportCertificate.php
@@ -42,11 +42,11 @@ class ImportCertificate extends Base {
 	protected function configure() {
 		$this
 			->setName('security:certificates:import')
-			->setDescription('import trusted certificate')
+			->setDescription('import trusted certificate in PEM format')
 			->addArgument(
 				'path',
 				InputArgument::REQUIRED,
-				'path to the certificate to import'
+				'path to the PEM certificate to import'
 			);
 	}
 
@@ -54,7 +54,7 @@ class ImportCertificate extends Base {
 		$path = $input->getArgument('path');
 
 		if (!file_exists($path)) {
-			$output->writeln('<error>certificate not found</error>');
+			$output->writeln('<error>Certificate not found, please provide a path accessible by the web server user</error>');
 			return 1;
 		}