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-rwxr-xr-xipproto.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ipproto.c b/ipproto.c
index 7b89afb9c836..644b36427719 100755
--- a/ipproto.c
+++ b/ipproto.c
@@ -27,7 +27,7 @@ static const char rcsid[] _U_ =
#include "interface.h"
#include "ipproto.h"
-struct tok ipproto_values[] = {
+const struct tok ipproto_values[] = {
{ IPPROTO_HOPOPTS, "Options" },
{ IPPROTO_ICMP, "ICMP" },
{ IPPROTO_IGMP, "IGMP" },