diff --git a/lib/std/c/netbsd.zig b/lib/std/c/netbsd.zig
index 8b7c1afbbf..57e1394097 100644
--- a/lib/std/c/netbsd.zig
+++ b/lib/std/c/netbsd.zig
@@ -1668,55 +1668,3 @@ pub const sigevent = extern struct {
     sigev_notify_function: ?*const fn (sigval) callconv(.C) void,
     sigev_notify_attributes: ?*pthread_attr_t,
 };
-
-pub const PTRACE = struct {
-    pub const FORK = 0x0001;
-    pub const VFORK = 0x0002;
-    pub const VFORK_DONE = 0x0004;
-    pub const LWP_CREATE = 0x0008;
-    pub const LWP_EXIT = 0x0010;
-    pub const POSIX_SPAWN = 0x0020;
-};
-
-pub const PT = struct {
-    pub const TRACE_ME = 0;
-    pub const READ_I = 1;
-    pub const READ_D = 2;
-    pub const WRITE_I = 4;
-    pub const WRITE_D = 5;
-    pub const CONTINUE = 7;
-    pub const KILL = 8;
-    pub const ATTACH = 9;
-    pub const DETACH = 10;
-    pub const IO = 11;
-    pub const DUMPCORE = 11;
-    pub const LWPINFO = 12;
-};
-
-pub const ptrace_event = extern struct {
-    set_event: c_int,
-};
-
-pub const ptrace_state = extern struct {
-    report_event: c_int,
-    _option: extern union {
-        other_pid: pid_t,
-        lwp: lwpid_t,
-    },
-};
-
-pub const ptrace_io_desc = extern struct {
-    op: c_int,
-    offs: ?*anyopaque,
-    addr: ?*anyopaque,
-    len: usize,
-};
-
-pub const PIOD = struct {
-    pub const READ_D = 1;
-    pub const WRITE_D = 2;
-    pub const READ_I = 3;
-    pub const WRITE_I = 4;
-};
-
-pub extern "c" fn ptrace(request: c_int, pid: pid_t, addr: ?*anyopaque, data: c_int) c_int;