diff --git a/id_tools/build.py b/id_tools/build.py
index 5027259..265f0ce 100644
--- a/id_tools/build.py
+++ b/id_tools/build.py
@@ -79,10 +79,6 @@ COPY ./LICENSE /chroot/usr/share/doc/interdiode/LICENSE
 WORKDIR /
 """
 
-NPM_TO_COPY = [
-    ("bootstrap/dist/js/bootstrap.esm.js.map", "js/bootstrap.esm.js.map"),
-]
-
 
 def build_docker_image(
     config: SourceConfig,