diff --git a/include/winerror.h b/include/winerror.h
index 270fa0a..8e7147f 100644
--- a/include/winerror.h
+++ b/include/winerror.h
@@ -1481,6 +1481,7 @@
 
 /* HRESULT values for OLE, SHELL and other Interface stuff */
 /* the codes 4000-40ff are reserved for OLE */
+#undef NOERROR  /* arpa/nameser_compat.h defines this */
 #define NOERROR                                            0L
 #define S_OK                                               ((HRESULT)0L)
 #define S_FALSE                                            ((HRESULT)1L)