1 files changed, 1 insertions, 1 deletions

diff --git a/include/net/icmp.h b/include/net/icmp.h
index dfa72d4e8907..15b3dfe9fce8 100644
--- a/include/net/icmp.h
+++ b/include/net/icmp.h
@@ -28,7 +28,7 @@ struct icmp_err {
   unsigned      fatal:1;
 };
 
-extern struct icmp_err icmp_err_convert[];
+extern const struct icmp_err icmp_err_convert[];
 #define ICMP_INC_STATS(net, field)      SNMP_INC_STATS((net)->mib.icmp_statistics, field)
 #define ICMP_INC_STATS_BH(net, field)   SNMP_INC_STATS_BH((net)->mib.icmp_statistics, field)
 #define ICMPMSGOUT_INC_STATS(net, field)        SNMP_INC_STATS((net)->mib.icmpmsg_statistics, field+256)