diff --git a/src/core/fonts.js b/src/core/fonts.js
index f5722983f..a0e8a5eea 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -1474,9 +1474,6 @@ var Font = (function FontClosure() {
               glyphId = (offsetIndex < 0 ?
                          j : offsets[offsetIndex + j - start]);
               glyphId = (glyphId + delta) & 0xFFFF;
-              if (glyphId === 0) {
-                continue;
-              }
               mappings.push({
                 charCode: j,
                 glyphId: glyphId
diff --git a/test/pdfs/issue8234.pdf b/test/pdfs/issue8234.pdf
new file mode 100644
index 000000000..3494d6140
Binary files /dev/null and b/test/pdfs/issue8234.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index bf7aee0bd..4972c2204 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -1243,6 +1243,12 @@
       "rounds": 1,
       "type": "eq"
     },
+    {  "id": "issue8234",
+      "file": "pdfs/issue8234.pdf",
+      "md5": "32650fc60c51a9813b98bc9876dc15af",
+      "rounds": 1,
+      "type": "eq"
+    },
     {  "id": "type4psfunc",
       "file": "pdfs/type4psfunc.pdf",
       "md5": "7e6027a02ff78577f74dccdf84e37189",