diff --git a/CHANGES.rst b/CHANGES.rst
index 9046383d78..271fe5d77f 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -28,6 +28,7 @@ Changelog
 
 **Fixed**
 
+- #1494 Fix KeyError in Sample Type Listing
 - #1477 Sample edit form - some selection widgets empty
 - #1478 Clients default CC E-Mails missing in Add Sample
 - #1479 Fixed too many redirects error: Labclerks viewing verified worksheets
diff --git a/bika/lims/controlpanel/bika_sampletypes.py b/bika/lims/controlpanel/bika_sampletypes.py
index 13cc681299..6e25efe4bf 100644
--- a/bika/lims/controlpanel/bika_sampletypes.py
+++ b/bika/lims/controlpanel/bika_sampletypes.py
@@ -152,9 +152,9 @@ def folderitem(self, obj, item, index):
 
         retention_period = obj.getRetentionPeriod()
         if retention_period:
-            hours = retention_period["hours"]
-            minutes = retention_period["minutes"]
-            days = retention_period["days"]
+            hours = retention_period.get("hours", "0")
+            minutes = retention_period.get("minutes", "0")
+            days = retention_period.get("days", "0")
             item["RetentionPeriod"] = _("hours: {} minutes: {} days: {}"
                                         .format(hours, minutes, days))
         else: