fix typo
diff --git a/Doc/api/utilities.tex b/Doc/api/utilities.tex
index ff8973f..12216f2 100644
--- a/Doc/api/utilities.tex
+++ b/Doc/api/utilities.tex
@@ -34,7 +34,7 @@
Return true when the interpreter runs out of stack space. This is a
reliable check, but is only available when \constant{USE_STACKCHECK}
is defined (currently on Windows using the Microsoft Visual \Cpp{}
- compiler). \constant{USE_CHECKSTACK} will be
+ compiler). \constant{USE_STACKCHECK} will be
defined automatically; you should never change the definition in
your own code.
\end{cfuncdesc}