diff --git a/newlib/libc/string/local.h b/newlib/libc/string/local.h
index babaad0e5..afef7e34a 100644
--- a/newlib/libc/string/local.h
+++ b/newlib/libc/string/local.h
@@ -4,10 +4,6 @@
 /* internal function to compute width of wide char. */
 int _EXFUN (__wcwidth, (wint_t));
 
-/* Defined in locale/locale.c.  Returns a value != 0 if the current
-   language is assumed to use CJK fonts. */
-int _EXFUN (__locale_cjk_lang, (void));
-
 /*
    Taken from glibc:
    Add the compiler optimization to inhibit loop transformation to library