diff --git a/runtime/oti/j9nonbuilder.h b/runtime/oti/j9nonbuilder.h
index d6daed775d4..7d1cea5bd26 100644
--- a/runtime/oti/j9nonbuilder.h
+++ b/runtime/oti/j9nonbuilder.h
@@ -2285,8 +2285,9 @@ typedef struct J9ROMMethodHandleRef {
 #define MN_IS_TYPE			0x00080000
 #define MN_CALLER_SENSITIVE	0x00100000
 #define MN_TRUSTED_FINAL	0x00200000
+#define MN_HIDDEN_MEMBER	0x00400000
 #if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
-#define MN_FLATTENED		0x00400000
+#define MN_FLATTENED		0x00800000
 #endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
 
 #define MN_REFERENCE_KIND_SHIFT	24