diff --git a/libc/include/pwd.h b/libc/include/pwd.h
index 6012b96..905bc75 100644
--- a/libc/include/pwd.h
+++ b/libc/include/pwd.h
@@ -106,6 +106,9 @@
   gid_t pw_gid;
 #ifdef __LP64__
   char* pw_gecos;
+#else
+  // Note: On LP32, we define pw_gecos to pw_passwd since they're both NULL.
+# define pw_gecos pw_passwd
 #endif
   char* pw_dir;
   char* pw_shell;