1 files changed, 1 insertions, 1 deletions
diff --git a/src/library.js b/src/library.js
index 7a1b1777..400c1536 100644
--- a/src/library.js
+++ b/src/library.js
@@ -1628,8 +1628,8 @@ LibraryManager.library = {
       var size = Math.min(contents.length - offset, nbyte);
       for (var i = 0; i < size; i++) {
         {{{ makeSetValue('buf', 'i', 'contents[offset + i]', 'i8') }}}
-        bytesRead++;
       }
+      bytesRead += size;
       return bytesRead;
     }
   },