diff --git a/src/tooltips.py b/src/tooltips.py
index 798e249793fad47c4e3d06d6df0894e7f77a22c7..9c2c56958a3a7148b4f43482a25d1998018d9dec 100644
--- a/src/tooltips.py
+++ b/src/tooltips.py
@@ -624,7 +624,7 @@ class RosterTooltip(NotificationAreaTooltip):
             # Do not show the "Idle since" and "Idle for" items if there
             # is no meaningful difference between last activity time and
             # current time.
-            if diff.days > 0 and diff.seconds > 0:
+            if diff.days > 0 or diff.seconds > 0:
                 cs = "<span foreground='#888A85'>%s</span>"
                 properties.append((str(), None))
                 properties.append(((cs % _("Idle since %s")) % formatted, None))