1 files changed, 1 insertions, 0 deletions
diff --git a/op.h b/op.h
index 415514d687..33484358f6 100644
--- a/op.h
+++ b/op.h
@@ -153,6 +153,7 @@ Deprecated.  Use C<GIMME_V> instead.
   /* OP_ENTERSUB only */
 #define OPpENTERSUB_DB		16	/* Debug subroutine. */
 #define OPpENTERSUB_HASTARG	32	/* Called from OP tree. */
+#define OPpENTERSUB_NOMOD	64	/* Immune to mod() for :attrlist. */
   /* OP_RV2CV only */
 #define OPpENTERSUB_AMPER	8	/* Used & form to call. */
 #define OPpENTERSUB_NOPAREN	128	/* bare sub call (without parens) */