diff --git a/quartz-manager-frontend/angular.json b/quartz-manager-frontend/angular.json
index 2b12aac..83be465 100644
--- a/quartz-manager-frontend/angular.json
+++ b/quartz-manager-frontend/angular.json
@@ -41,7 +41,6 @@
               "optimization": true,
               "outputHashing": "all",
               "sourceMap": false,
-              "extractCss": true,
               "namedChunks": false,
               "aot": true,
               "extractLicenses": true,