diff --git a/FL/fl_callback_macros.H b/FL/fl_callback_macros.H
index b1c2a349d..398d848b9 100644
--- a/FL/fl_callback_macros.H
+++ b/FL/fl_callback_macros.H
@@ -60,8 +60,8 @@
  Fl_Button *btn2 = new Fl_Button(10, 40, 100, 20, "Hello");
  FL_FUNCTION_CALLBACK_5(btn2,
    fl_message,
-   const char *, text, "Hello\n%d %d %d %d",
-   int, a, 1,  int, b, 2,  int, c, 3,  int, d, 4
+   const char *, "Hello\n%d %d %d %d",
+   int, 1,  int, 2,  int, 3,  int, 4
  );
  \endcode