diff --git a/xen/arch/x86/mm/mm-locks.h b/xen/arch/x86/mm/mm-locks.h
index 3ea2d8eb03..7d6e4d2a7c 100644
--- a/xen/arch/x86/mm/mm-locks.h
+++ b/xen/arch/x86/mm/mm-locks.h
@@ -150,7 +150,7 @@ static always_inline void _mm_write_lock(const struct domain *d, mm_rwlock_t *l,
         _set_lock_level(_lock_level(d, level));
     }
     else
-        block_speculation();
+        block_lock_speculation();
     l->recurse_count++;
 }