diff --git a/ntoskrnl/include/internal/ex.h b/ntoskrnl/include/internal/ex.h
index 1c730359091..7666e699707 100644
--- a/ntoskrnl/include/internal/ex.h
+++ b/ntoskrnl/include/internal/ex.h
@@ -1149,7 +1149,7 @@ ExReleasePushLockExclusive(PEX_PUSH_LOCK PushLock)
 
     /* Unlock the pushlock */
     OldValue.Value = InterlockedExchangeAddSizeT((PSIZE_T)PushLock,
-                                                 -(SIZE_T)EX_PUSH_LOCK_LOCK);
+                                                 -(SSIZE_T)EX_PUSH_LOCK_LOCK);
 
     /* Sanity checks */
     ASSERT(OldValue.Locked);
diff --git a/ntoskrnl/include/internal/trap_x.h b/ntoskrnl/include/internal/trap_x.h
index 5ead64057e2..09d17ed94e3 100644
--- a/ntoskrnl/include/internal/trap_x.h
+++ b/ntoskrnl/include/internal/trap_x.h
@@ -21,6 +21,7 @@
 #endif
 #elif _MSC_VER
 #define UNREACHABLE __assume(0)
+#define __builtin_expect(a,b) (a)
 #else
 #define UNREACHABLE
 #endif