diff --git a/projects/ngx-mat-intl-tel-input-tester/.eslintrc.json b/projects/ngx-mat-intl-tel-input-tester/.eslintrc.json
index d73ae3640..f83c02a37 100644
--- a/projects/ngx-mat-intl-tel-input-tester/.eslintrc.json
+++ b/projects/ngx-mat-intl-tel-input-tester/.eslintrc.json
@@ -10,9 +10,9 @@
       ],
       "parserOptions": {
         "project": [
-          "projects/ngx-mat-intl-tel-input-tester//tsconfig.app.json",
-          "projects/ngx-mat-intl-tel-input-tester//tsconfig.spec.json",
-          "projects/ngx-mat-intl-tel-input-tester//e2e/tsconfig.json"
+          "projects/ngx-mat-intl-tel-input-tester/tsconfig.app.json",
+          "projects/ngx-mat-intl-tel-input-tester/tsconfig.spec.json",
+          "projects/ngx-mat-intl-tel-input-tester/e2e/tsconfig.json"
         ],
         "createDefaultProgram": true
       },
diff --git a/projects/ngx-mat-intl-tel-input-tester/tsconfig.app.json b/projects/ngx-mat-intl-tel-input-tester/tsconfig.app.json
index 809c09ca7..e27929482 100644
--- a/projects/ngx-mat-intl-tel-input-tester/tsconfig.app.json
+++ b/projects/ngx-mat-intl-tel-input-tester/tsconfig.app.json
@@ -6,6 +6,7 @@
   },
   "files": [
     "src/main.ts",
+    "src/environments/environment.prod.ts",
     "src/polyfills.ts"
   ],
   "include": [