diff --git a/mkspecs/common/vxworks/qplatformdefs.h b/mkspecs/common/vxworks/qplatformdefs.h
index 0679f729681..28f4e8b436d 100644
--- a/mkspecs/common/vxworks/qplatformdefs.h
+++ b/mkspecs/common/vxworks/qplatformdefs.h
@@ -36,6 +36,13 @@
 
 #define S_ISVTX 01000
 
+/*
+ * vxworks introduces some defines that replace READ with 0 and WRITE with 1
+ * this causes issues with moc and Q_PROPERTY
+ */
+#undef READ
+#undef WRITE
+
 /* vxworks exposes these definitions only when _POSIX_C_SOURCE >=200809L but we don't want to set this, as it hides other API */
 #ifndef UTIME_NOW
 #  define UTIME_NOW       ((1l << 30) - 1l)