diff --git a/lib/curl_printf.h b/lib/curl_printf.h
index c2457d2a64..df752258bf 100644
--- a/lib/curl_printf.h
+++ b/lib/curl_printf.h
@@ -40,7 +40,6 @@
 # undef msnprintf
 # undef vprintf
 # undef vfprintf
-# undef vsnprintf
 # undef mvsnprintf
 # undef aprintf
 # undef vaprintf
diff --git a/lib/curlx.h b/lib/curlx.h
index 54e4279572..fa6d9eb7a6 100644
--- a/lib/curlx.h
+++ b/lib/curlx.h
@@ -98,7 +98,6 @@
 # undef msnprintf
 # undef vprintf
 # undef vfprintf
-# undef vsprintf
 # undef mvsnprintf
 # undef aprintf
 # undef vaprintf