diff --git a/netbox/dcim/api/serializers.py b/netbox/dcim/api/serializers.py
index 9e19d0bb7..6b285620f 100644
--- a/netbox/dcim/api/serializers.py
+++ b/netbox/dcim/api/serializers.py
@@ -191,7 +191,7 @@ class WritableRackReservationSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = RackReservation
-        fields = ['id', 'rack', 'units', 'user', 'description']
+        fields = ['id', 'rack', 'units', 'description']
 
 
 #
diff --git a/netbox/dcim/api/views.py b/netbox/dcim/api/views.py
index 8afd78cb0..0e1923ce6 100644
--- a/netbox/dcim/api/views.py
+++ b/netbox/dcim/api/views.py
@@ -117,6 +117,10 @@ class RackReservationViewSet(WritableSerializerMixin, ModelViewSet):
     write_serializer_class = serializers.WritableRackReservationSerializer
     filter_class = filters.RackReservationFilter
 
+    # Assign user from request
+    def perform_create(self, serializer):
+        serializer.save(user=self.request.user)
+
 
 #
 # Manufacturers