diff --git a/lib/srv6.c b/lib/srv6.c
index 287bf56089..9b9f402987 100644
--- a/lib/srv6.c
+++ b/lib/srv6.c
@@ -76,7 +76,8 @@ int snprintf_seg6_segs(char *str,
 }
 
 const char *seg6local_context2str(char *str, size_t size,
-		struct seg6local_context *ctx, uint32_t action)
+				  const struct seg6local_context *ctx,
+				  uint32_t action)
 {
 	char b0[128];
 
diff --git a/lib/srv6.h b/lib/srv6.h
index 24c7ffc3a2..b72b098c78 100644
--- a/lib/srv6.h
+++ b/lib/srv6.h
@@ -119,9 +119,9 @@ static inline void *sid_copy(struct in6_addr *dst,
 const char *
 seg6local_action2str(uint32_t action);
 
-const char *
-seg6local_context2str(char *str, size_t size,
-		struct seg6local_context *ctx, uint32_t action);
+const char *seg6local_context2str(char *str, size_t size,
+				  const struct seg6local_context *ctx,
+				  uint32_t action);
 
 int snprintf_seg6_segs(char *str,
 		size_t size, const struct seg6_segs *segs);