diff --git a/angular.json b/angular.json
index f4db9a6d5e..1a9862e5c0 100644
--- a/angular.json
+++ b/angular.json
@@ -56,11 +56,6 @@
                 "input": "demo-shell/src/app/components/lazy-loading/i18n",
                 "output": "/resources/lazy-loading/i18n"
               },
-              {
-                "glob": "**/*",
-                "input": "dist/libs/core/lib/prebuilt-themes",
-                "output": ""
-              },
               {
                 "glob": "**/*",
                 "input": "lib/core/src/lib/assets",