diff --git a/reactos/include/psdk/iphlpapi.h b/reactos/include/psdk/iphlpapi.h
index 56c32fdc087..a799280d265 100644
--- a/reactos/include/psdk/iphlpapi.h
+++ b/reactos/include/psdk/iphlpapi.h
@@ -19,6 +19,9 @@ DWORD WINAPI DeleteProxyArpEntry(DWORD,DWORD,DWORD);
 DWORD WINAPI EnableRouter(HANDLE*,OVERLAPPED*);
 DWORD WINAPI FlushIpNetTable(DWORD);
 DWORD WINAPI GetAdapterIndex(LPWSTR,PULONG);
+#ifdef _WINSOCK2API_
+DWORD WINAPI GetAdaptersAddresses(ULONG,ULONG,PVOID,PIP_ADAPTER_ADDRESSES,PULONG);
+#endif
 DWORD WINAPI GetAdaptersInfo(PIP_ADAPTER_INFO,PULONG);
 DWORD WINAPI GetBestInterface(IPAddr,PDWORD);
 DWORD WINAPI GetBestRoute(DWORD,DWORD,PMIB_IPFORWARDROW);
diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index ee06339189e..6cdb089423c 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -2416,6 +2416,9 @@ typedef PCACTCTXW PCACTCTX;
 #define GetCommandLine GetCommandLineW
 #define GetCompressedFileSize GetCompressedFileSizeW
 #define GetComputerName GetComputerNameW
+#if (_WIN32_WINNT >= 0x0500)
+#define GetComputerNameEx GetComputerNameExW
+#endif
 #define GetCurrentDirectory GetCurrentDirectoryW
 #define GetDefaultCommConfig GetDefaultCommConfigW
 #define GetDiskFreeSpace GetDiskFreeSpaceW
@@ -2619,6 +2622,9 @@ typedef ENUMRESTYPEPROCA ENUMRESTYPEPROC;
 #define GetBinaryType GetBinaryTypeA
 #define GetCommandLine GetCommandLineA
 #define GetComputerName GetComputerNameA
+#if (_WIN32_WINNT >= 0x0500)
+#define GetComputerNameEx GetComputerNameExA
+#endif
 #define GetCompressedFileSize GetCompressedFileSizeA
 #define GetCurrentDirectory GetCurrentDirectoryA
 #define GetDefaultCommConfig GetDefaultCommConfigA