diff --git a/src/CmapProcessor.js b/src/CmapProcessor.js
index 6acc501..013a74a 100644
--- a/src/CmapProcessor.js
+++ b/src/CmapProcessor.js
@@ -248,7 +248,7 @@ export default class CmapProcessor {
               }
             }
 
-            if (g === gid) {
+            if ((g & 0xffff) === gid) {
               res.push(c);
             }
           }