diff --git a/lib/std/c/netbsd.zig b/lib/std/c/netbsd.zig
index 57e1394097e8c1858fd4736634873b3ef76e0256..6e4872612d40940752e7725f6e25807d463820ba 100644
--- a/lib/std/c/netbsd.zig
+++ b/lib/std/c/netbsd.zig
@@ -485,11 +485,6 @@ pub const AF = struct {
     pub const MAX = 37;
 };
 
-pub const accept_filter_arg = extern struct {
-    af_name: [16]u8,
-    af_args: [240]u8,
-};
-
 pub const in_port_t = u16;
 pub const sa_family_t = u8;