diff --git a/app/controllers/auth/Oauth2.controller.js b/app/controllers/auth/Oauth2.controller.js
index 861cc6b..3666bb1 100644
--- a/app/controllers/auth/Oauth2.controller.js
+++ b/app/controllers/auth/Oauth2.controller.js
@@ -67,8 +67,9 @@ class Oauth2 extends Oauth2Controller {
             })
         }
 
-        if ( req.query.state ) {
-            const state = Array.isArray(req.query.state) ? req.query.state[0] : req.query.state
+        let state;
+        if ( state = (req.query.state || req.body.state) ) {
+            state = Array.isArray(req.query.state) ? req.query.state[0] : req.query.state
             const uri_params = new URLSearchParams(uri.params)
             uri_params.set('state', state)
         }