diff --git a/lib/std/os.zig b/lib/std/os.zig
index 5554e6e31ad8d8ef574556bf01c2eb98862c53ae..7dbd454b872e775c15069320c5ab067354013bbf 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -5731,7 +5731,7 @@ pub fn gethostname(name_buffer: *[HOST_NAME_MAX]u8) GetHostNameError![]u8 {
             else => |err| return unexpectedErrno(err),
         }
     }
-    if (builtin.os.tag == .linux) {
+    if (builtin.os.tag == .linux or builtin.os.tag == .macos or builtin.os.tag == .freebsd) {
         const uts = uname();
         const hostname = mem.sliceTo(&uts.nodename, 0);
         const result = name_buffer[0..hostname.len];