diff --git a/Doc/lib/libprofile.tex b/Doc/lib/libprofile.tex
index b7a1c1e..debb332 100644
--- a/Doc/lib/libprofile.tex
+++ b/Doc/lib/libprofile.tex
@@ -520,7 +520,7 @@
 that it relies on the Python interpreter to dispatch \dfn{call},
 \dfn{return}, and \dfn{exception} events.  Compiled \C{} code does not
 get interpreted, and hence is ``invisible'' to the profiler.  All time
-spent in \C{} code (including builtin functions) will be charged to the
+spent in \C{} code (including built-in functions) will be charged to the
 Python function that invoked the \C{} code.  If the \C{} code calls out
 to some native Python code, then those calls will be profiled
 properly.