diff --git a/tests/strings/tokenizer.cpp b/tests/strings/tokenizer.cpp
index 8394d5a761..14fd24f8fd 100644
--- a/tests/strings/tokenizer.cpp
+++ b/tests/strings/tokenizer.cpp
@@ -176,7 +176,12 @@ void TokenizerTestCase::StrtokCompat()
         if ( ttd.mode != wxTOKEN_STRTOK )
             continue;
 
-        wxCharBuffer buf(ttd.str);
+#if wxUSE_UNICODE
+        wxWCharBuffer
+#else
+        wxCharBuffer
+#endif
+            buf(ttd.str);
         wxChar *last;
         wxChar *s = wxStrtok(buf.data(), ttd.delims, &last);