diff --git a/vibes_auth/viewsets.py b/vibes_auth/viewsets.py
index adb72f88..8d5206d1 100644
--- a/vibes_auth/viewsets.py
+++ b/vibes_auth/viewsets.py
@@ -109,7 +109,7 @@ class UserViewSet(
         detail = ""
         activation_error = None
         try:
-            uuid = urlsafe_base64_decode(request.data.get("uidb64")).decode()
+            uuid = urlsafe_base64_decode(request.data.get("uidb_64")).decode()
             user = User.objects.nocache().get(pk=uuid)
             if not user.check_token(urlsafe_base64_decode(request.data.get("token")).decode()):
                 return Response(