diff --git a/win32/build/config.w32.h.in b/win32/build/config.w32.h.in
index e8476605c37f8..3eb161149716a 100644
--- a/win32/build/config.w32.h.in
+++ b/win32/build/config.w32.h.in
@@ -116,9 +116,8 @@
 /* Win32 support proc_open */
 #define PHP_CAN_SUPPORT_PROC_OPEN 1
 
-/* inet_ntop() / inet_pton() */
+/* inet_pton() */
 #define HAVE_INET_PTON 1
-#define HAVE_INET_NTOP 1
 
 /* vs.net 2005 has a 64-bit time_t.  This will likely break
  * 3rdParty libs that were built with older compilers; switch