diff --git a/plugins/test/Makefile b/plugins/test/Makefile
index 0165ee8c646c..5bcf2eaad549 100644
--- a/plugins/test/Makefile
+++ b/plugins/test/Makefile
@@ -19,7 +19,8 @@ plugins/test/run-route-overlong:		\
 	common/fp16.o				\
 	common/gossmap.o			\
 	common/node_id.o			\
-	common/route.o
+	common/route.o				\
+        gossipd/gossip_store_wiregen.o
 
 plugins/test/run-route-calc:			\
 	common/fp16.o				\
diff --git a/plugins/test/run-route-overlong.c b/plugins/test/run-route-overlong.c
index 0f9703ea2aa9..7b105c66df70 100644
--- a/plugins/test/run-route-overlong.c
+++ b/plugins/test/run-route-overlong.c
@@ -4,6 +4,7 @@
 #include <common/gossip_store.h>
 #include <common/setup.h>
 #include <common/utils.h>
+#include <gossipd/gossip_store_wiregen.h>
 #include <stdio.h>
 #include <unistd.h>
 
@@ -372,10 +373,16 @@ static void add_connection(int store_fd,
 					  ids[0], ids[1],
 					  &dummy_key, &dummy_key);
 	write_to_store(store_fd, msg);
+	tal_free(msg);
 
-	update_connection(store_fd, from, to, scid, min, max,
-			  base_fee, proportional_fee,
-			  delay, false);
+	/* Also needs a hint as to the funding size. */
+	struct amount_sat capacity = AMOUNT_SAT(100000000);
+	msg = towire_gossip_store_channel_amount(tmpctx, capacity);
+	write_to_store(store_fd, msg);
+	tal_free(msg);
+
+	update_connection(store_fd, from, to, scid, min, max, base_fee,
+			  proportional_fee, delay, false);
 }
 
 static void node_id_from_privkey(const struct privkey *p, struct node_id *id)