diff --git a/tests/test.cpp b/tests/test.cpp
index 38c9175f9b..00c21251f2 100644
--- a/tests/test.cpp
+++ b/tests/test.cpp
@@ -94,9 +94,9 @@ void TestApp::OnInitCmdLine(wxCmdLineParser& parser)
         { wxCMD_LINE_SWITCH, _T("L"), _T("longlist"),
             _T("list the test cases, do not run them"),
             wxCMD_LINE_VAL_NONE, 0 },
-        { wxCMD_LINE_PARAM, 0, 0, _T("REGISTRY"), wxCMD_LINE_VAL_STRING,
+        { wxCMD_LINE_PARAM, "", "", _T("REGISTRY"), wxCMD_LINE_VAL_STRING,
             wxCMD_LINE_PARAM_OPTIONAL | wxCMD_LINE_PARAM_MULTIPLE },
-        { wxCMD_LINE_NONE , 0, 0, 0, wxCMD_LINE_VAL_NONE, 0 }
+        { wxCMD_LINE_NONE , "", "", "", wxCMD_LINE_VAL_NONE, 0 }
     };
 
     parser.SetDesc(cmdLineDesc);