diff --git a/src/Javascript/RuleParser.php b/src/Javascript/RuleParser.php
index 34468085..d80c87f8 100644
--- a/src/Javascript/RuleParser.php
+++ b/src/Javascript/RuleParser.php
@@ -93,7 +93,7 @@ public function addConditionalRules($attribute, $rules = [])
     {
         foreach ((array) $attribute as $key) {
             $current = isset($this->conditional[$key]) ? $this->conditional[$key] : [];
-            $merge = head($this->validator->explodeRules([$rules]));
+            $merge = head($this->validator->explodeRules((array) $rules));
             $this->conditional[$key] = array_merge($current, $merge);
         }
     }