diff --git a/lib/std/os.zig b/lib/std/os.zig
index 6d59080820..a935cfd8c0 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -993,7 +993,7 @@ pub fn write(fd: fd_t, bytes: []const u8) WriteError!usize {
 /// transfer further bytes or may result in an error (e.g., if the disk is now full).
 ///
 /// For POSIX systems, if `fd` is opened in non blocking mode, the function will
-/// return error.WouldBlock when EAGAIN is received.k`.
+/// return error.WouldBlock when EAGAIN is received.
 /// On Windows, if the application has a global event loop enabled, I/O Completion Ports are
 /// used to perform the I/O. `error.WouldBlock` is not possible on Windows.
 ///