diff --git a/h/m2_traps.h b/h/m2_traps.h
index 39c1b6b7..bbba1204 100644
--- a/h/m2_traps.h
+++ b/h/m2_traps.h
@@ -1,3 +1,5 @@
 #define M2_TOOLARGE	64
 #define M2_TOOMANY	65
 #define M2_NORESULT	66
+#define M2_UOVFL	67
+#define M2_FORCH	68