diff --git a/libc/include/time.h b/libc/include/time.h
index fa1da48..14066a1 100644
--- a/libc/include/time.h
+++ b/libc/include/time.h
@@ -83,6 +83,7 @@
 struct strftime_locale {
     const char *  mon[12];
     const char *  month[12];
+    const char *  standalone_month[12];
     const char *  wday[7];
     const char *  weekday[7];
     const char *  X_fmt;