diff --git a/commafeed-client/biome.json b/commafeed-client/biome.json
index cb934fa9..51e821a1 100644
--- a/commafeed-client/biome.json
+++ b/commafeed-client/biome.json
@@ -13,14 +13,6 @@
             "arrowParentheses": "asNeeded"
         }
     },
-    "linter": {
-        "rules": {
-            "correctness": {
-                "noUnusedImports": "error",
-                "noUnusedVariables": "error"
-            }
-        }
-    },
     "files": {
         "includes": ["**", "!**/dist", "!**/node_modules", "!**/target", "!**/target-ide"]
     }
diff --git a/commafeed-client/vite.config.ts b/commafeed-client/vite.config.ts
index 35bc32a1..0ad960ec 100644
--- a/commafeed-client/vite.config.ts
+++ b/commafeed-client/vite.config.ts
@@ -20,6 +20,7 @@ export default defineConfig(() => ({
             typescript: true,
             biome: {
                 command: "check",
+                flags: "--error-on-warnings",
             },
         }),
     ],