diff --git a/doc/langref.html.in b/doc/langref.html.in
index 233e7799fbfd3fe2199822fbe32ef8991119fb65..442e4ac52b52f8e6088ae3d40c64f697baa05d4e 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -2157,6 +2157,7 @@ test "allowzero" {
       against buffer overflow and overreads.
       </p>
       {#code_begin|exe_build_err#}
+      {#link_libc#}
 const std = @import("std");
 
 // This is also available as `std.c.printf`.