diff --git a/src/server/cache-node.h b/src/server/cache-node.h
index 453bee8b3b3b74296d58ba63297294319f8c588e..8291c6f4d0549824f63be33b4bb62582bec15b06 100644
--- a/src/server/cache-node.h
+++ b/src/server/cache-node.h
@@ -87,3 +87,5 @@ set_mru(Cache_node_mcb *mcb,
 	u_long         key);
 
 
+extern void
+free_cache_node_mcb(Cache_node_mcb *control);