diff --git a/src/core/jpx.js b/src/core/jpx.js
index 8821ce60e31e2..ec4f32d649be4 100644
--- a/src/core/jpx.js
+++ b/src/core/jpx.js
@@ -1125,6 +1125,11 @@ var JpxImage = (function JpxImageClosure() {
             zeroBitPlanesTree = new TagTree(width, height);
             precinct.inclusionTree = inclusionTree;
             precinct.zeroBitPlanesTree = zeroBitPlanesTree;
+            for (var l=0; l < layerNumber; l++) {
+              if (readBits(1) !== 0) {
+                throw new Error('JPX Error: Invalid tag tree');
+              }
+            }
           }
 
           if (inclusionTree.reset(codeblockColumn, codeblockRow, layerNumber)) {