diff --git a/src/libraries/System.Runtime/tests/System/ArrayTests.cs b/src/libraries/System.Runtime/tests/System/ArrayTests.cs
index 41b61b30357e0b..18f13bfddceaf1 100644
--- a/src/libraries/System.Runtime/tests/System/ArrayTests.cs
+++ b/src/libraries/System.Runtime/tests/System/ArrayTests.cs
@@ -4292,7 +4292,7 @@ public static void Fill_Sidecast()
         {
             uint[] uintArray = (uint[])(object)new int[] { 0, 1, 2, 3 };
             Array.Fill<uint>(uintArray, 42);
-            Assert.Equal(new int[] { 42, 42, 42, 42 }, uintArray);
+            Assert.Equal(new uint[] { 42, 42, 42, 42 }, uintArray);
         }
 
         [Fact]
@@ -4300,7 +4300,7 @@ public static void FillWithStartIndexAndCount_Sidecast()
         {
             uint[] uintArray = (uint[])(object)new int[] { 0, 1, 2, 3 };
             Array.Fill<uint>(uintArray, 42, 1, 2);
-            Assert.Equal(new int[] { 0, 42, 42, 3 }, uintArray);
+            Assert.Equal(new uint[] { 0, 42, 42, 3 }, uintArray);
         }
 
         [Fact]