diff --git a/lib/std/c.zig b/lib/std/c.zig
index c6af875df2cc3a251cf1d9de35544a268729f0fa..ae616664cb0cfc3699948431c50fd1d64936b8f7 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -1395,6 +1395,51 @@ pub const CPU = switch (native_os) {
     },
     else => void,
 };
+pub const HW = switch (native_os) {
+    .freebsd => struct {
+        pub const MACHINE = 1;
+        pub const MODEL = 2;
+        pub const NCPU = 3;
+        pub const BYTEORDER = 4;
+        pub const PHYSMEM = 5;
+        pub const USERMEM = 6;
+        pub const PAGESIZE = 7;
+        pub const DISKNAMES = 8;
+        pub const DISKSTATS = 9;
+        pub const FLOATINGPT = 10;
+        pub const MACHINE_ARCH = 11;
+        pub const REALMEM = 12;
+    },
+    .openbsd => struct {
+        pub const MACHINE = 1;
+        pub const MODEL = 2;
+        pub const NCPU = 3;
+        pub const BYTEORDER = 4;
+        pub const PHYSMEM = 5;
+        pub const USERMEM = 6;
+        pub const PAGESIZE = 7;
+        pub const DISKNAMES = 8;
+        pub const DISKSTATS = 9;
+        pub const DISKCOUNT = 10;
+        pub const SENSORS = 11;
+        pub const CPUSPEED = 12;
+        pub const SETPERF = 13;
+        pub const VENDOR = 14;
+        pub const PRODUCT = 15;
+        pub const VERSION = 16;
+        pub const SERIALNO = 17;
+        pub const UUID = 18;
+        pub const PHYSMEM64 = 19;
+        pub const USERMEM64 = 20;
+        pub const NCPUFOUND = 21;
+        pub const ALLOWPOWERDOWN = 22;
+        pub const PERFPOLICY = 23;
+        pub const SMT = 24;
+        pub const NCPUONLINE = 25;
+        pub const POWER = 26;
+    },
+    else => void,
+};
 pub const KERN = switch (native_os) {
     .freebsd => struct {
         /// struct: process entries
@@ -11333,7 +11378,6 @@ pub const writev_pos = haiku.writev_pos;
 
 pub const AUTH = openbsd.AUTH;
 pub const BI = openbsd.BI;
-pub const HW = openbsd.HW;
 pub const PTHREAD_STACK_MIN = openbsd.PTHREAD_STACK_MIN;
 pub const TCFLUSH = openbsd.TCFLUSH;
 pub const TCIO = openbsd.TCIO;
diff --git a/lib/std/c/openbsd.zig b/lib/std/c/openbsd.zig
index 91ba8a8f5f76b85a2952c0a37421dcc11925a087..e6d277af9f4a613743d5d6fd1e29a739a7be6d93 100644
--- a/lib/std/c/openbsd.zig
+++ b/lib/std/c/openbsd.zig
@@ -273,35 +273,6 @@ pub const MAX_PAGE_SHIFT = switch (builtin.cpu.arch) {
     .sparc64 => 13,
 };
 
-pub const HW = struct {
-    pub const MACHINE = 1;
-    pub const MODEL = 2;
-    pub const NCPU = 3;
-    pub const BYTEORDER = 4;
-    pub const PHYSMEM = 5;
-    pub const USERMEM = 6;
-    pub const PAGESIZE = 7;
-    pub const DISKNAMES = 8;
-    pub const DISKSTATS = 9;
-    pub const DISKCOUNT = 10;
-    pub const SENSORS = 11;
-    pub const CPUSPEED = 12;
-    pub const SETPERF = 13;
-    pub const VENDOR = 14;
-    pub const PRODUCT = 15;
-    pub const VERSION = 16;
-    pub const SERIALNO = 17;
-    pub const UUID = 18;
-    pub const PHYSMEM64 = 19;
-    pub const USERMEM64 = 20;
-    pub const NCPUFOUND = 21;
-    pub const ALLOWPOWERDOWN = 22;
-    pub const PERFPOLICY = 23;
-    pub const SMT = 24;
-    pub const NCPUONLINE = 25;
-    pub const POWER = 26;
-};
-
 pub const PTHREAD_STACK_MIN = switch (builtin.cpu.arch) {
     .sparc64 => 1 << 13,
     .mips64 => 1 << 14,