diff --git a/libcutils/jstring.h b/libcutils/jstring.h
index 6ede786..c75a490 100644
--- a/libcutils/jstring.h
+++ b/libcutils/jstring.h
@@ -32,6 +32,10 @@ extern char * strndup16to8 (const char16_t* s, size_t n);
 extern size_t strnlen16to8 (const char16_t* s, size_t n);
 extern char * strncpy16to8 (char *dest, const char16_t*s, size_t n);
 
+extern char16_t * strdup8to16 (const char* s, size_t *out_len);
+extern size_t strlen8to16 (const char* utf8Str);
+extern char16_t * strcpy8to16 (char16_t *dest, const char*s, size_t *out_len);
+
 #ifdef __cplusplus
 }
 #endif