diff --git a/headers/build/gcc-2.95.3/limits.h b/headers/build/gcc-2.95.3/limits.h
index 8a2433203b..20b9c471b4 100644
--- a/headers/build/gcc-2.95.3/limits.h
+++ b/headers/build/gcc-2.95.3/limits.h
@@ -23,7 +23,7 @@
 
 /* Maximum length of a multibyte character.  */
 #ifndef MB_LEN_MAX
-#define MB_LEN_MAX 1
+#define MB_LEN_MAX 16
 #endif
 
 /* Minimum and maximum values a `signed char' can hold.  */
diff --git a/headers/posix/limits.h b/headers/posix/limits.h
index 8fd8ea1eff..48b1d98391 100644
--- a/headers/posix/limits.h
+++ b/headers/posix/limits.h
@@ -26,6 +26,8 @@
 #define	LLONG_MAX		LONGLONG_MAX
 #define	LLONG_MIN		LONGLONG_MIN
 
+#define MB_LEN_MAX		16
+
 #define OFF_MAX			LLONG_MAX
 #define OFF_MIN			LLONG_MIN