diff --git a/build-ff.sh b/build-ff.sh
index db2873e..52ceb70 100644
--- a/build-ff.sh
+++ b/build-ff.sh
@@ -18,3 +18,4 @@ zip -r ${OUTPUT_FILE} *
 popd
 pushd ${MANIFEST_DIR}
 zip ${OUTPUT_FILE} manifest.json
+popd