1 files changed, 1 insertions, 1 deletions
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index f19a2e0f..eaebdb83 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -2344,7 +2344,7 @@ babel_rte_better(struct rte *new, struct rte *old)
 }
 
 static u32
-babel_rte_igp_metric(struct rte *rt)
+babel_rte_igp_metric(const rte *rt)
 {
   return ea_get_int(rt->attrs->eattrs, &ea_babel_metric, BABEL_INFINITY);
 }