diff --git a/lib/private-libwebsockets.h b/lib/private-libwebsockets.h
index fafc0cc7..1593a76b 100644
--- a/lib/private-libwebsockets.h
+++ b/lib/private-libwebsockets.h
@@ -324,12 +324,6 @@ extern int
 libwebsocket_read(struct libwebsocket_context *context, struct libwebsocket *wsi,
 					       unsigned char * buf, size_t len);
 
-extern int
-lws_b64_encode_string(const char *in, int in_len, char *out, int out_size);
-
-extern int
-lws_b64_decode_string(const char *in, char *out, int out_size);
-
 extern int
 lws_b64_selftest(void);