diff --git a/cmake/ConfigureChecks.cmake b/cmake/ConfigureChecks.cmake
index 33a9cee2..47704726 100644
--- a/cmake/ConfigureChecks.cmake
+++ b/cmake/ConfigureChecks.cmake
@@ -11,7 +11,6 @@ check_include_file(sys/time.h   HAVE_SYS_TIME_H)# dbus-sysdeps-win.c
 check_include_file(sys/wait.h   HAVE_SYS_WAIT_H)# dbus-sysdeps-win.c
 check_include_file(time.h       HAVE_TIME_H)    # dbus-sysdeps-win.c
 check_include_file(ws2tcpip.h   HAVE_WS2TCPIP_H)# dbus-sysdeps-win.c
-check_include_file(wspiapi.h    HAVE_WSPIAPI_H) # dbus-sysdeps-win.c
 check_include_file(unistd.h     HAVE_UNISTD_H)  # dbus-sysdeps-util-win.c
 check_include_file(stdio.h      HAVE_STDIO_H)   # dbus-sysdeps.h
 check_include_file(sys/syslimits.h    HAVE_SYS_SYSLIMITS_H)   # dbus-sysdeps-unix.c
diff --git a/cmake/config.h.cmake b/cmake/config.h.cmake
index f14b169e..d6ea64f2 100644
--- a/cmake/config.h.cmake
+++ b/cmake/config.h.cmake
@@ -124,9 +124,6 @@
 /* Define to 1 if you have ws2tcpip.h */
 #cmakedefine   HAVE_WS2TCPIP_H
 
-/* Define to 1 if you have wspiapi.h */
-#cmakedefine   HAVE_WSPIAPI_H 1
-
 /* Define to 1 if you have unistd.h */
 #cmakedefine   HAVE_UNISTD_H 1
 
diff --git a/configure.ac b/configure.ac
index da4ab5fb..f201b5b1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -699,8 +699,6 @@ AC_CHECK_HEADERS(unistd.h)
 
 AC_CHECK_HEADERS(ws2tcpip.h)
 
-AC_CHECK_HEADERS(wspiapi.h)
-
 AC_CHECK_HEADERS(alloca.h)
 
 # Add -D_POSIX_PTHREAD_SEMANTICS if on Solaris
diff --git a/dbus/dbus-sysdeps-win.c b/dbus/dbus-sysdeps-win.c
index a77e5b58..1c974c50 100644
--- a/dbus/dbus-sysdeps-win.c
+++ b/dbus/dbus-sysdeps-win.c
@@ -77,16 +77,6 @@ extern BOOL WINAPI ConvertSidToStringSidA (PSID Sid, LPSTR *StringSid);
 #include <ws2tcpip.h>
 #endif
 
-#ifdef HAVE_WSPIAPI_H
-// needed for w2k compatibility (getaddrinfo/freeaddrinfo/getnameinfo)
-#ifdef __GNUC__
-#define _inline
-#include "wspiapi.h"
-#else
-#include <wspiapi.h>
-#endif
-#endif // HAVE_WSPIAPI_H
-
 #ifndef O_BINARY
 #define O_BINARY 0
 #endif