diff --git a/web/build.sh b/web/build.sh
index 10a6364..e4e048c 100755
--- a/web/build.sh
+++ b/web/build.sh
@@ -11,5 +11,5 @@ cd ..
 
 emcc --bind -o src/tokenizers_binding.js src/tokenizers_binding.cc\
   build/libtokenizers_cpp.a build/libtokenizers_c.a   build/sentencepiece/src/libsentencepiece.a\
- -O3 -s EXPORT_ES6=1 -s MODULARIZE=1 -s SINGLE_FILE=1 -s EXPORTED_RUNTIME_METHODS=FS -s ALLOW_MEMORY_GROWTH=1\
+ -O3 -s EXPORT_ES6=1 -s ERROR_ON_UNDEFINED_SYMBOLS=0 -s NO_DYNAMIC_EXECUTION=1 -s MODULARIZE=1 -s SINGLE_FILE=1 -s EXPORTED_RUNTIME_METHODS=FS -s ALLOW_MEMORY_GROWTH=1\
  -I../include