diff --git a/src/Illuminate/View/Compilers/BladeCompiler.php b/src/Illuminate/View/Compilers/BladeCompiler.php
index c70b0b5158c8..2fb1406ca47d 100644
--- a/src/Illuminate/View/Compilers/BladeCompiler.php
+++ b/src/Illuminate/View/Compilers/BladeCompiler.php
@@ -435,6 +435,12 @@ public function if($name, callable $callback)
                     : "<?php if (\Illuminate\Support\Facades\Blade::check('{$name}')): ?>";
         });
 
+        $this->directive('unless'.$name, function ($expression) use ($name) {
+            return $expression !== ''
+                ? "<?php if (! \Illuminate\Support\Facades\Blade::check('{$name}', {$expression})): ?>"
+                : "<?php if (! \Illuminate\Support\Facades\Blade::check('{$name}')): ?>";
+        });
+
         $this->directive('else'.$name, function ($expression) use ($name) {
             return $expression !== ''
                 ? "<?php elseif (\Illuminate\Support\Facades\Blade::check('{$name}', {$expression})): ?>"
diff --git a/tests/View/Blade/BladeCustomTest.php b/tests/View/Blade/BladeCustomTest.php
index 8afd1ebdd677..b2b947aa115b 100644
--- a/tests/View/Blade/BladeCustomTest.php
+++ b/tests/View/Blade/BladeCustomTest.php
@@ -127,6 +127,19 @@ public function testCustomIfElseConditions()
         $this->assertEquals($expected, $this->compiler->compileString($string));
     }
 
+    public function testCustomUnlessConditions()
+    {
+        $this->compiler->if('custom', function ($anything) {
+            return true;
+        });
+
+        $string = '@unlesscustom($user)
+@endcustom';
+        $expected = '<?php if (! \Illuminate\Support\Facades\Blade::check(\'custom\', $user)): ?>
+<?php endif; ?>';
+        $this->assertEquals($expected, $this->compiler->compileString($string));
+    }
+
     public function testCustomConditionsAccepts0AsArgument()
     {
         $this->compiler->if('custom', function ($number) {