diff --git a/js/tools/build/make-js.sh b/js/tools/build/make-js.sh
index 49dda47..a592700 100755
--- a/js/tools/build/make-js.sh
+++ b/js/tools/build/make-js.sh
@@ -6,6 +6,7 @@
   ../../WebSocketTransport.js \
   ../../util/CCNProtocolDTags.js \
   ../../util/CCNTime.js \
+  ../../util/ExponentialReExpressClosure.js \
   ../../Name.js \
   ../../ContentObject.js \
   ../../encoding/DateFormat.js \