diff --git a/rtl/wince/wininc/defines.inc b/rtl/wince/wininc/defines.inc
index d4f94aaa58..76290a15cc 100644
--- a/rtl/wince/wininc/defines.inc
+++ b/rtl/wince/wininc/defines.inc
@@ -1786,14 +1786,15 @@
      VTA_BASELINE = 24;
      VTA_CENTER = 6;
   { GetThreadPriority  }
-     THREAD_PRIORITY_ABOVE_NORMAL = 1;
-     THREAD_PRIORITY_BELOW_NORMAL = -(1);
-     THREAD_PRIORITY_HIGHEST = 2;
-     THREAD_PRIORITY_IDLE = -(15);
-     THREAD_PRIORITY_LOWEST = -(2);
-     THREAD_PRIORITY_NORMAL = 0;
-     THREAD_PRIORITY_TIME_CRITICAL = 15;
-     THREAD_PRIORITY_ERROR_RETURN = 2147483647;
+     THREAD_PRIORITY_TIME_CRITICAL = 0;
+     THREAD_PRIORITY_HIGHEST       = 1;
+     THREAD_PRIORITY_ABOVE_NORMAL  = 2;
+     THREAD_PRIORITY_NORMAL        = 3;
+     THREAD_PRIORITY_BELOW_NORMAL  = 4;
+     THREAD_PRIORITY_LOWEST        = 5;
+     THREAD_PRIORITY_ABOVE_IDLE    = 6;
+     THREAD_PRIORITY_IDLE          = 7;
+     THREAD_PRIORITY_ERROR_RETURN  = 2147483647;
      TLS_MINIMUM_AVAILABLE = 64;
   { GetTimeFormat  }
      TIME_NOMINUTESORSECONDS = 1;