diff --git a/src/Foundatio/Caching/InMemoryCacheClient.cs b/src/Foundatio/Caching/InMemoryCacheClient.cs
index 73d4732b..1d746877 100644
--- a/src/Foundatio/Caching/InMemoryCacheClient.cs
+++ b/src/Foundatio/Caching/InMemoryCacheClient.cs
@@ -928,7 +928,7 @@ private async Task DoMaintenanceAsync()
             foreach (var kvp in _memory.ToArray())
             {
                 bool lastAccessTimeIsInfrequent = kvp.Value.LastAccessTicks < lastAccessMaximumTicks;
-                if (lastAccessTimeIsInfrequent && kvp.Value.ExpiresAt <= utcNow)
+                if (lastAccessTimeIsInfrequent && kvp.Value.ExpiresAt < DateTime.MaxValue && kvp.Value.ExpiresAt <= utcNow)
                 {
                     _logger.LogDebug("DoMaintenance: Removing expired key {Key}", kvp.Key);
                     RemoveExpiredKey(kvp.Key);