diff --git a/tests/Composer/Test/Util/ErrorHandlerTest.php b/tests/Composer/Test/Util/ErrorHandlerTest.php
index 485c2bd39..cb16a1e13 100644
--- a/tests/Composer/Test/Util/ErrorHandlerTest.php
+++ b/tests/Composer/Test/Util/ErrorHandlerTest.php
@@ -38,7 +38,7 @@ class ErrorHandlerTest extends TestCase
      */
     public function testErrorHandlerCaptureWarning()
     {
-        $this->setExpectedException('\ErrorException', 'array_merge(): Argument #2 is not an array');
+        $this->setExpectedException('\ErrorException', 'array_merge');
 
         ErrorHandler::register();