diff --git a/include/psdk/nspapi.h b/include/psdk/nspapi.h
index baa15a50e78..6e921e3c838 100644
--- a/include/psdk/nspapi.h
+++ b/include/psdk/nspapi.h
@@ -37,8 +37,8 @@ extern "C" {
 #ifndef RC_INVOKED
 
 #if defined (_WINSOCKAPI_) || defined (_WINSOCK2API_) /* needed for LPSOCKADDR */
-#ifndef __CSADDR_T_DEFINED /* also in winsock2.h, but not in winsock.h */
-#define __CSADDR_T_DEFINED
+#ifndef __CSADDR_DEFINED__ /* also in winsock2.h, but not in winsock.h */
+#define __CSADDR_DEFINED__
 typedef struct _SOCKET_ADDRESS {
 	LPSOCKADDR lpSockaddr;
 	INT iSockaddrLength;