diff --git a/pdfio-token.c b/pdfio-token.c
index 49ece38..4819547 100644
--- a/pdfio-token.c
+++ b/pdfio-token.c
@@ -397,7 +397,7 @@ _pdfioTokenRead(_pdfio_token_t *tb,	// I - Token buffer/stack
         {
           // UTF-16 string, convert to UTF-8...
           PDFIO_DEBUG("_pdfioTokenRead: Converting string to UTF-8.\n", stderr);
-          _pdfio_utf16cpy(buffer + 1, (unsigned char *)buffer + 1, bufptr - buffer  - 1, bufsize - 1);
+          _pdfio_utf16cpy(buffer + 1, (unsigned char *)buffer + 1, (size_t)(bufptr - buffer - 1), bufsize - 1);
 
           PDFIO_DEBUG("_pdfioTokenRead: Read '%s'.\n", buffer);
           return (true);
diff --git a/ttf b/ttf
index 667760a..c86b7c3 160000
--- a/ttf
+++ b/ttf
@@ -1 +1 @@
-Subproject commit 667760a156fe3248f7dff1e2d4294627abdf6bfb
+Subproject commit c86b7c35d8f90b098c1d855f3ca103a3c1dbdb0a