diff --git a/script/constructicon/build b/script/constructicon/build
index 647108d85..5b0bd2b98 100755
--- a/script/constructicon/build
+++ b/script/constructicon/build
@@ -8,6 +8,7 @@ set -ex
 cd "$(dirname "$0")/../.."
 rm -fr node_modules
 rm -fr vendor/apm/node_modules
+rm -fr build/node_modules
 ./script/bootstrap --no-color
 ./build/node_modules/.bin/grunt --no-color --build-dir="$BUILT_PRODUCTS_DIR" deploy