diff --git a/docs/ecolyo/functionalities/dacc.md b/docs/ecolyo/functionalities/dacc.md
index e521fa4782d5d5a8d4ba69c83f84793c8ead9ebd..bbc43dff783e33e36e938de19c8b5c303698f0c2 100644
--- a/docs/ecolyo/functionalities/dacc.md
+++ b/docs/ecolyo/functionalities/dacc.md
@@ -204,7 +204,7 @@ You will be able to see previous events and freshly genereated events in the db
 
 *If aggregatorUsageEvents changed*
 ```sh
-yarn build-dev:browser & yarn run cozy-konnector-dev -m ./manifest.webapp ./build/services/aggregatorUsageEvents/ecolyo.js
+yarn build-dev:browser && yarn run cozy-konnector-dev -m ./manifest.webapp ./build/services/aggregatorUsageEvents/ecolyo.js
 ```
 *To save time, when running multiple times and if aggregatorUsageEvents didn't change, you don't have to build.*
 ```sh