diff --git a/addons/web/static/src/legacy/utils.js b/addons/web/static/src/legacy/utils.js
index 47e50561453..248430848a8 100644
--- a/addons/web/static/src/legacy/utils.js
+++ b/addons/web/static/src/legacy/utils.js
@@ -156,8 +156,9 @@ export function mapLegacyEnvToWowlEnv(legacyEnv, wowlEnv) {
             // Add user context in kwargs if there are kwargs
             if (params && params.kwargs) {
                 params.kwargs.context = Object.assign(
-                    params.kwargs.context || {},
-                    legacyEnv.session.user_context
+                    {},
+                    legacyEnv.session.user_context,
+                    params.kwargs.context,
                 );
             }
             const jsonrpc = wowlEnv.services.rpc(route, params, {