diff --git a/tests/NLog.UnitTests/LayoutRenderers/Wrappers/CachedTests.cs b/tests/NLog.UnitTests/LayoutRenderers/Wrappers/CachedTests.cs
index a5c9ce9..d8ebf17 100644
--- a/tests/NLog.UnitTests/LayoutRenderers/Wrappers/CachedTests.cs
+++ b/tests/NLog.UnitTests/LayoutRenderers/Wrappers/CachedTests.cs
@@ -154,13 +154,11 @@ namespace NLog.UnitTests.LayoutRenderers.Wrappers
         }
 
         [Theory]
-        [InlineData("cachedUntil=HourChange")]
-        [InlineData("cachedUntil=DayChange")]
-        [InlineData("cachedSeconds=3600")]
-        [InlineData("cachedUntil=DayChange:cachedSeconds=3600")]
-        public void CachedLastPeriodTest(string cachedOptions)
+        [InlineData("HourChange")]
+        [InlineData("DayChange")]
+        public void CachedUntilLastPeriodTest(string cachedUntil)
         {
-            SimpleLayout l = "${guid:" + cachedOptions + "}";
+            SimpleLayout l = "${guid:cachedUntil=" + cachedUntil + "}";
             var s1 = l.Render(new LogEventInfo() { TimeStamp = DateTime.MaxValue.AddMinutes(-30) });
             var s2 = l.Render(new LogEventInfo() { TimeStamp = DateTime.MaxValue });
             Assert.NotEmpty(s1);