diff --git a/libc-test/build.rs b/libc-test/build.rs
index a31d6ba4878ba..7d7062cb9b97b 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -590,9 +590,12 @@ fn test_openbsd(target: &str) {
 
     cfg.skip_const(move |name| {
         match name {
-            // Removed in OpenBSD 7.7 (unused since 1991)
+            // Removed in OpenBSD 7.7
             "ATF_COM" | "ATF_PERM" | "ATF_PUBL" | "ATF_USETRAILERS" => true,
 
+            // Removed in OpenBSD 7.8
+            "CTL_FS" | "SO_NETPROC" => true,
+
             _ => false,
         }
     });