diff --git a/tests/UnitTests/TemplateSource/TagTests/FunctionPlugin/CompileFunctionPluginTest.php b/tests/UnitTests/TemplateSource/TagTests/FunctionPlugin/CompileFunctionPluginTest.php
index b17580ba..8d154d52 100644
--- a/tests/UnitTests/TemplateSource/TagTests/FunctionPlugin/CompileFunctionPluginTest.php
+++ b/tests/UnitTests/TemplateSource/TagTests/FunctionPlugin/CompileFunctionPluginTest.php
@@ -76,7 +76,7 @@ class CompileFunctionPluginTest extends PHPUnit_Smarty
     }
 }
 
-function myplugintest($params, &$smarty)
+function myplugintest($params, $smarty)
 {
     return "plugin test called $params[foo]";
 }