diff --git a/sdk/include/psdk/winbase.h b/sdk/include/psdk/winbase.h
index cd7446c5c4c..7c45b151c87 100644
--- a/sdk/include/psdk/winbase.h
+++ b/sdk/include/psdk/winbase.h
@@ -2369,6 +2369,16 @@ VOID WINAPI GetStartupInfoW(LPSTARTUPINFOW);
 HANDLE WINAPI GetStdHandle(_In_ DWORD);
 UINT WINAPI GetSystemDirectoryA(LPSTR,UINT);
 UINT WINAPI GetSystemDirectoryW(LPWSTR,UINT);
+
+WINBASEAPI
+UINT
+WINAPI
+GetSystemFirmwareTable(
+  _In_ DWORD FirmwareTableProviderSignature,
+  _In_ DWORD FirmwareTableID,
+  _Out_writes_bytes_to_opt_(BufferSize,return) PVOID pFirmwareTableBuffer,
+  _In_ DWORD BufferSize);
+
 VOID WINAPI GetSystemInfo(LPSYSTEM_INFO);
 BOOL WINAPI GetSystemPowerStatus(_Out_ LPSYSTEM_POWER_STATUS);
 #if (_WIN32_WINNT >= 0x0502)