diff --git a/conf/.env b/conf/.env
index 592e830..3c79767 100644
--- a/conf/.env
+++ b/conf/.env
@@ -11,7 +11,7 @@ GRAPHQL_API_FULL_PATH=""
 
 # APP
 MIX_ENV=prod
-MOBILIZON_LOGLEVEL="info"
+MOBILIZON_LOGLEVEL="error"
 MOBILIZON_SECRET="__SECRET__"
 
 # Database
diff --git a/scripts/install b/scripts/install
index b95e0e5..7054b60 100644
--- a/scripts/install
+++ b/scripts/install
@@ -184,12 +184,14 @@ pushd $final_path/$app/js
 popd
 
 pushd $final_path/$app
+    ynh_replace_string --match_string="config :logger" --replace_string="#config :logger" --target_file="$final_path/$app/config/prod.exs"
     source .env
     sudo -u "$app" MIX_ENV=prod mix local.hex --force
     sudo -u "$app" MIX_ENV=prod mix local.rebar --force
     sudo -u "$app" MIX_ENV=prod mix deps.get
     sudo -u "$app" MIX_ENV=prod mix ecto.migrate
     sudo -u "$app" MIX_ENV=prod mix phx.digest
+    ynh_replace_string --match_string="#config :logger" --replace_string="config :logger" --target_file="$final_path/$app/config/prod.exs"
 popd
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index b8a085a..8ce3564 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -195,12 +195,14 @@ pushd $final_path/$app/js
 popd
 
 pushd $final_path/$app
+    ynh_replace_string --match_string="config :logger" --replace_string="#config :logger" --target_file="$final_path/$app/config/prod.exs"
     source .env
     sudo -u "$app" MIX_ENV=prod mix local.hex --force
     sudo -u "$app" MIX_ENV=prod mix local.rebar --force
     sudo -u "$app" MIX_ENV=prod mix deps.get
     sudo -u "$app" MIX_ENV=prod mix ecto.migrate
     sudo -u "$app" MIX_ENV=prod mix phx.digest
+    ynh_replace_string --match_string="#config :logger" --replace_string="config :logger" --target_file="$final_path/$app/config/prod.exs"
 popd
 
 #=================================================