diff --git a/X10D.Tests/src/Collections/EnumerableTests.cs b/X10D.Tests/src/Collections/EnumerableTests.cs
index 5cd9dc0..40cb35e 100644
--- a/X10D.Tests/src/Collections/EnumerableTests.cs
+++ b/X10D.Tests/src/Collections/EnumerableTests.cs
@@ -9,14 +9,7 @@ public class EnumerableTests
     [TestMethod]
     public void EnumerableShuffledShouldBeDifferentOrder()
     {
-        var list = new List<int>
-        {
-            1,
-            2,
-            3,
-            4,
-            5
-        };
+        var list = new List<int>(Enumerable.Range(1, 52)); // 52! chance of being shuffled to the same order
         var shuffled = new List<int>(list);
 
         CollectionAssert.AreEqual(list, shuffled);
diff --git a/X10D.Tests/src/Collections/ListTests.cs b/X10D.Tests/src/Collections/ListTests.cs
index 135a485..53d5906 100644
--- a/X10D.Tests/src/Collections/ListTests.cs
+++ b/X10D.Tests/src/Collections/ListTests.cs
@@ -9,14 +9,7 @@ public class ListTests
     [TestMethod]
     public void ListShuffleShouldReorder()
     {
-        var list = new List<int>
-        {
-            1,
-            2,
-            3,
-            4,
-            5
-        };
+        var list = new List<int>(Enumerable.Range(1, 52)); // 52! chance of being shuffled to the same order
         var shuffled = new List<int>(list);
 
         CollectionAssert.AreEqual(list, shuffled);
@@ -29,15 +22,7 @@ public class ListTests
     [TestMethod]
     public void ListRandomShouldReturnExistingObject()
     {
-        var list = new List<int>
-        {
-            1,
-            2,
-            3,
-            4,
-            5
-        };
-
+        var list = new List<int>(Enumerable.Range(1, 52)); // 52! chance of being shuffled to the same order
         int random = list.Random();
 
         Assert.IsTrue(list.Contains(random));