diff --git a/vlib/v/checker/tests/interface_init_err.out b/vlib/v/checker/tests/interface_init_err.out
index f9a63fac4d..238395c279 100644
--- a/vlib/v/checker/tests/interface_init_err.out
+++ b/vlib/v/checker/tests/interface_init_err.out
@@ -1,5 +1,5 @@
-vlib/v/checker/tests/interface_init_err.vv:15:7: warning: interface field `Server.handler` must be initialized
-   13 |
+vlib/v/checker/tests/interface_init_err.vv:15:7: error: interface field `Server.handler` must be initialized
+   13 | 
    14 | fn main() {
    15 |     _ := Server{}
       |          ~~~~~~~~