diff --git a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
index a8e2a73b2407..85a7592d99d4 100644
--- a/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
+++ b/src/Illuminate/Validation/Concerns/ValidatesAttributes.php
@@ -1547,10 +1547,6 @@ public function validateRequiredUnless($attribute, $value, $parameters)
     {
         $this->requireParameterCount(2, $parameters, 'required_unless');
 
-        if (! Arr::has($this->data, $parameters[0])) {
-            return true;
-        }
-
         [$values, $other] = $this->parseDependentRuleParameters($parameters);
 
         if (! in_array($other, $values, is_bool($other) || is_null($other))) {
diff --git a/tests/Validation/ValidationValidatorTest.php b/tests/Validation/ValidationValidatorTest.php
index 6c13c7ce0186..0d3bab85d4cc 100755
--- a/tests/Validation/ValidationValidatorTest.php
+++ b/tests/Validation/ValidationValidatorTest.php
@@ -1198,13 +1198,25 @@ public function testRequiredUnless()
         $this->assertTrue($v->passes());
 
         $trans = $this->getIlluminateArrayTranslator();
-        $v = new Validator($trans, ['foo' => false], ['bar' => 'required_unless:foo,false']);
-        $this->assertTrue($v->passes());
+        $v = new Validator($trans, [], ['bar' => 'required_unless:foo,true']);
+        $this->assertTrue($v->fails());
 
         $trans = $this->getIlluminateArrayTranslator();
         $v = new Validator($trans, ['foo' => false], ['bar' => 'required_unless:foo,true']);
         $this->assertTrue($v->fails());
 
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['bar' => '1'], ['bar' => 'required_unless:foo,true']);
+        $this->assertTrue($v->passes());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, ['foo' => false], ['bar' => 'required_unless:foo,false']);
+        $this->assertTrue($v->passes());
+
+        $trans = $this->getIlluminateArrayTranslator();
+        $v = new Validator($trans, [], ['foo' => 'required_unless:bar,null']);
+        $this->assertTrue($v->passes());
+
         $trans = $this->getIlluminateArrayTranslator();
         $v = new Validator($trans, ['foo' => true], ['bar' => 'required_unless:foo,null']);
         $this->assertTrue($v->fails());