diff --git a/libc-test/build.rs b/libc-test/build.rs
index 743f9f28404db..07396d921e3f6 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -1194,6 +1194,8 @@ fn test_netbsd(target: &str) {
 
     cfg.skip_fn(move |name| {
         match name {
+            // FIXME: currently unsupported; see https://github.com/JohnTitor/ctest2/issues/58
+            "esetfunc" => true,
             // FIXME: netbsd 10 minimum
             "getentropy" | "getrandom" => true,