diff --git a/src/Orchard.Web/Modules/Orchard.AuditTrail/Helpers/DateTimeExtensions.cs b/src/Orchard.Web/Modules/Orchard.AuditTrail/Helpers/DateTimeExtensions.cs
index 0289ca343..ad5eb75a9 100644
--- a/src/Orchard.Web/Modules/Orchard.AuditTrail/Helpers/DateTimeExtensions.cs
+++ b/src/Orchard.Web/Modules/Orchard.AuditTrail/Helpers/DateTimeExtensions.cs
@@ -6,8 +6,11 @@ namespace Orchard.AuditTrail.Helpers {
             if (value == null)
                 return null;
 
-            var v = value.Value;
-            return new DateTime(v.Year, v.Month, v.Day, 0, 0, 0, 0, v.Kind);
+            return Earliest(value.Value);
+        }
+
+        public static DateTime Earliest(this DateTime value) {
+            return new DateTime(value.Year, value.Month, value.Day, 0, 0, 0, 0, value.Kind);
         }
 
         public static DateTime? Latest(this DateTime? value) {
@@ -17,5 +20,9 @@ namespace Orchard.AuditTrail.Helpers {
             var v = value.Value;
             return new DateTime(v.Year, v.Month, v.Day, 23, 59, 59, 999, v.Kind);
         }
+
+        public static DateTime Latest(this DateTime value) {
+            return new DateTime(value.Year, value.Month, value.Day, 23, 59, 59, 999, value.Kind);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.AuditTrail/Services/AuditTrailManager.cs b/src/Orchard.Web/Modules/Orchard.AuditTrail/Services/AuditTrailManager.cs
index 82ad787b7..a9f9f0af0 100644
--- a/src/Orchard.Web/Modules/Orchard.AuditTrail/Services/AuditTrailManager.cs
+++ b/src/Orchard.Web/Modules/Orchard.AuditTrail/Services/AuditTrailManager.cs
@@ -207,8 +207,8 @@ namespace Orchard.AuditTrail.Services {
         }
 
         public IEnumerable<AuditTrailEventRecord> Trim(TimeSpan retentionPeriod) {
-            var dateThreshold = _clock.UtcNow.Date - retentionPeriod;
-            var query = _auditTrailRepository.Table.Where(x => x.CreatedUtc < dateThreshold);
+            var dateThreshold = (_clock.UtcNow.Latest() - retentionPeriod);
+            var query = _auditTrailRepository.Table.Where(x => x.CreatedUtc <= dateThreshold);
             var records = query.ToArray();
 
             foreach (var record in records) {