diff --git a/cmake/ConfigureChecks.cmake b/cmake/ConfigureChecks.cmake
index 1212bf9f..756d67fe 100644
--- a/cmake/ConfigureChecks.cmake
+++ b/cmake/ConfigureChecks.cmake
@@ -10,6 +10,7 @@ check_include_file(sys/poll.h   HAVE_POLL)      # dbus-sysdeps.c, dbus-sysdeps-w
 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(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 018fdfd2..4f523878 100644
--- a/cmake/config.h.cmake
+++ b/cmake/config.h.cmake
@@ -82,6 +82,9 @@
 /* Define to 1 if you have time.h */
 #cmakedefine   HAVE_TIME_H 1
 
+/* 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.in b/configure.in
index 34c79a56..24ad5544 100644
--- a/configure.in
+++ b/configure.in
@@ -443,6 +443,8 @@ AC_CHECK_HEADERS(byteswap.h)
 
 AC_CHECK_HEADERS(unistd.h)
 
+AC_CHECK_HEADERS(wspiapi.h)
+
 # Add -D_POSIX_PTHREAD_SEMANTICS if on Solaris
 #
 case $host_os in
diff --git a/dbus/dbus-sysdeps-win.c b/dbus/dbus-sysdeps-win.c
index 4a42c761..98bf4c94 100644
--- a/dbus/dbus-sysdeps-win.c
+++ b/dbus/dbus-sysdeps-win.c
@@ -53,6 +53,16 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
+#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