diff --git a/src/make_queue/views/reservation.py b/src/make_queue/views/reservation.py
index 70115bcee..a93a47c79 100644
--- a/src/make_queue/views/reservation.py
+++ b/src/make_queue/views/reservation.py
@@ -415,8 +415,12 @@ def form_valid(self, form):
 
         periods = []
         for machine in form.cleaned_data["machine_type"].machines.all():
-            if not machine.get_status() == Machine.Status.OUT_OF_ORDER:
-                periods.extend(self.get_periods(machine, required_time))
+            if machine.get_status() in (
+                Machine.Status.OUT_OF_ORDER,
+                Machine.Status.MAINTENANCE,
+            ):
+                continue
+            periods.extend(self.get_periods(machine, required_time))
 
         # Periods in the near future is more interesting than in the distant
         # future