diff --git a/web/package.json b/web/package.json
index 36969567e..e9be5f96b 100644
--- a/web/package.json
+++ b/web/package.json
@@ -35,7 +35,7 @@
         "bootstrap": "npm install && lerna bootstrap --hoist",
         "build": "lerna run build --stream",
         "buildProduction": "lerna run build --stream -- --mode=production",
-        "build:avm_debug": "lerna run build --stream -- -- --env.features=avm_debug",
+        "build:avm_debug": "lerna run build --stream -- -- --env features=avm_debug",
         "demo": "lerna run --scope ruffle-demo serve --stream",
         "test": "lerna run test --stream",
         "format": "eslint . --fix && prettier . --write",