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-rw-r--r--proto.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/proto.h b/proto.h
index 7a4b23a..227a748 100644
--- a/proto.h
+++ b/proto.h
@@ -17,7 +17,7 @@ struct pkt_buff;
struct protocol {
/* Needs to be filled out by user */
- unsigned int key;
+ const unsigned int key;
void (*print_full)(struct pkt_buff *pkt);
void (*print_less)(struct pkt_buff *pkt);
/* Used by program logic */