diff --git a/Misc/NEWS b/Misc/NEWS
index 4401418d765..d04309071c1 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@ What's New in Python 3.3.3 release candidate 1?
 Core and Builtins
 -----------------
 
+- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
+
 - Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
   fails.
 
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 32c85b8be91..f3234a45389 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -11965,6 +11965,10 @@ static char *have_functions[] = {
     "HAVE_FCHOWN",
 #endif
 
+#ifdef HAVE_FCHOWNAT
+    "HAVE_FCHOWNAT",
+#endif
+
 #ifdef HAVE_FEXECVE
     "HAVE_FEXECVE",
 #endif