diff --git a/src/Illuminate/Validation/Concerns/FormatsMessages.php b/src/Illuminate/Validation/Concerns/FormatsMessages.php
index 0758819daaad..4d4042a4e10f 100644
--- a/src/Illuminate/Validation/Concerns/FormatsMessages.php
+++ b/src/Illuminate/Validation/Concerns/FormatsMessages.php
@@ -442,6 +442,10 @@ public function getDisplayableValue($attribute, $value)
             return $this->customValues[$attribute][$value];
         }
 
+        if (is_array($value)) {
+            return 'array';
+        }
+
         $key = "validation.values.{$attribute}.{$value}";
 
         if (($line = $this->translator->get($key)) !== $key) {
diff --git a/tests/Validation/ValidationValidatorTest.php b/tests/Validation/ValidationValidatorTest.php
index e7178b674c30..23bf82651098 100755
--- a/tests/Validation/ValidationValidatorTest.php
+++ b/tests/Validation/ValidationValidatorTest.php
@@ -1416,6 +1416,29 @@ public function testRequiredIf()
         $this->assertSame('The baz field is required when foo is empty.', $v->messages()->first('baz'));
     }
 
+    public function testRequiredIfArrayToStringConversationErrorException()
+    {
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, [
+            'is_customer' => 1,
+            'fullname' => null,
+        ], [
+            'is_customer' => 'required|boolean',
+            'fullname' => 'required_if:is_customer,true',
+        ]);
+        $this->assertTrue($v->fails());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, [
+            'is_customer' => ['test'],
+            'fullname' => null,
+        ], [
+            'is_customer' => 'required|boolean',
+            'fullname' => 'required_if:is_customer,true',
+        ]);
+        $this->assertTrue($v->fails());
+    }
+
     public function testRequiredUnless()
     {
         $trans = $this->getIlluminateArrayTranslator();