diff --git a/languages/en.lang b/languages/en.lang
index ec7137ca..8084c341 100644
--- a/languages/en.lang
+++ b/languages/en.lang
@@ -352,7 +352,7 @@ $PALANG['pStatus_custom'] = 'Delivers to ';
 $PALANG['pStatus_popimap'] = 'POP/IMAP ';
 
 $PALANG['password_too_short'] = "Password is too short - requires %s characters";
-$PALANG['password_no_characters'] = "Your password must contain at least %s character(s).";
+$PALANG['password_no_characters'] = "Your password must contain at least %s letters (A-Z, a-z).";
 $PALANG['password_no_digits'] = "Your password must contain at least %s digit(s).";
 $PALANG['pInvalidDomainRegex'] = "Invalid domain name %s, fails regexp check";
 $PALANG['pInvalidDomainDNS'] = "Invalid domain %s, and/or not discoverable in DNS";