diff --git a/include/proto/checks.h b/include/proto/checks.h
index 1e65652..24dec79 100644
--- a/include/proto/checks.h
+++ b/include/proto/checks.h
@@ -45,6 +45,7 @@
 }
 
 const char *init_check(struct check *check, int type);
+void free_check(struct check *check);
 
 #endif /* _PROTO_CHECKS_H */