diff --git a/doc/NOTES b/doc/NOTES
index ea910888..3f3caa95 100644
--- a/doc/NOTES
+++ b/doc/NOTES
@@ -53,9 +53,9 @@ stack trace:
 
     unw_cursor_t cursor;
     unw_word_t ip, sp;
-    ucontext_t uc;
+    unw_context_t uc;
 
-    getcontext(&uc);
+    unw_getcontext(&uc);
     unw_init_local(&cursor, &uc);
     do
       {