diff --git a/lang/en/webservice.php b/lang/en/webservice.php
index aac539124f7..d932cd96a8b 100644
--- a/lang/en/webservice.php
+++ b/lang/en/webservice.php
@@ -92,7 +92,7 @@ $string['externalservices'] = 'External services';
 $string['externalserviceusers'] = 'External service users';
 $string['failedtolog'] = 'Failed to log';
 $string['filenameexist'] = 'File name already exists: {$a}';
-$string['forbiddenwsuser'] = 'Can not create token for a unconfirmed, deleted, suspended or guest user.';
+$string['forbiddenwsuser'] = 'Can not create token for an unconfirmed, deleted, suspended or guest user.';
 $string['function'] = 'Function';
 $string['functions'] = 'Functions';
 $string['generalstructure'] = 'General structure';