Tweak wording.

app/lang/en/validation.php

@@ -58,7 +58,7 @@ return array(
 	"required"             => "The :attribute field is required.",
 	"required_if"          => "The :attribute field is required when :other is :value.",
 	"required_with"        => "The :attribute field is required when :values is present.",
-	"required_with_all"    => "The :attribute field is required when all of :values are present.",
+	"required_with_all"    => "The :attribute field is required when :values is present.",
 	"required_without"     => "The :attribute field is required when :values is not present.",
 	"required_without_all" => "The :attribute field is required when none of :values are present.",
 	"same"                 => "The :attribute and :other must match.",