diff --git a/lib/gui_lite.py b/lib/gui_lite.py
index e0e26ffa..d2f61063 100644
--- a/lib/gui_lite.py
+++ b/lib/gui_lite.py
@@ -750,10 +750,12 @@ class MiniActuator:
                     if confirmations:
                         if timestamp is not None:
                             try:
-                                time_string = datetime.datetime.fromtimestamp( timestamp).isoformat(' ')[:-3]
+                                time_string = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
                             except [RuntimeError, TypeError, NameError] as reason:
                                 time_string = "unknown"
                                 pass
+                        else:
+                          time_string = "unknown"
                     else:
                         time_string = "pending"