diff --git a/tailbone/views/tempmon/core.py b/tailbone/views/tempmon/core.py
index 3f4df128..62ace028 100644
--- a/tailbone/views/tempmon/core.py
+++ b/tailbone/views/tempmon/core.py
@@ -55,7 +55,7 @@ class MasterView(views.MasterView):
                 'good_temp_min': probe.good_temp_min,
                 'good_temp_max': probe.good_temp_max,
                 'critical_temp_max': probe.critical_temp_max,
-                'status': self.enum.TEMPMON_PROBE_STATUS[probe.status],
+                'status': self.enum.TEMPMON_PROBE_STATUS.get(probe.status, '??'),
                 'enabled': "Yes" if probe.enabled else "No",
             })
         app = self.get_rattail_app()