diff --git a/tests/Core/Config/ReportWidthTest.php b/tests/Core/Config/ReportWidthTest.php
index aa5375a42c..144b00caa6 100644
--- a/tests/Core/Config/ReportWidthTest.php
+++ b/tests/Core/Config/ReportWidthTest.php
@@ -295,7 +295,7 @@ public static function setStaticProperty($name, $value)
     {
         $property = new ReflectionProperty('PHP_CodeSniffer\Config', $name);
         $property->setAccessible(true);
-        $property->setValue($value);
+        $property->setValue(null, $value);
         $property->setAccessible(false);
 
     }//end setStaticProperty()