diff --git a/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.Generic.cs b/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.Generic.cs
index 5e435ee9bb..fba19065b0 100644
--- a/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.Generic.cs
+++ b/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.Generic.cs
@@ -38,7 +38,7 @@ public abstract partial class ImageFrameCollectionTests
                     using ImageFrame<Rgba32> addedFrame = this.Collection.AddFrame((ImageFrame<Rgba32>)null);
                 });
 
-            Assert.StartsWith("Parameter \"frame\" must be not null.", ex.Message);
+            Assert.StartsWith("Value cannot be null. (Parameter 'frame')", ex.Message);
         }
 
         [Fact]
@@ -52,7 +52,7 @@ public abstract partial class ImageFrameCollectionTests
                     using ImageFrame<Rgba32> addedFrame = this.Collection.AddFrame(data);
                 });
 
-            Assert.StartsWith("Parameter \"source\" must be not null.", ex.Message);
+            Assert.StartsWith("Value cannot be null. (Parameter 'source')", ex.Message);
         }
 
         [Fact]
@@ -89,7 +89,7 @@ public abstract partial class ImageFrameCollectionTests
                     using ImageFrame<Rgba32> insertedFrame = this.Collection.InsertFrame(1, null);
                 });
 
-            Assert.StartsWith("Parameter \"frame\" must be not null.", ex.Message);
+            Assert.StartsWith("Value cannot be null. (Parameter 'frame')", ex.Message);
         }
 
         [Fact]
diff --git a/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.NonGeneric.cs b/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.NonGeneric.cs
index 60290a7eda..bc22806c3c 100644
--- a/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.NonGeneric.cs
+++ b/tests/ImageSharp.Tests/Image/ImageFrameCollectionTests.NonGeneric.cs
@@ -77,7 +77,7 @@ public abstract partial class ImageFrameCollectionTests
             ArgumentNullException ex = Assert.Throws<ArgumentNullException>(
                 () => this.Collection.AddFrame(null));
 
-            Assert.StartsWith("Parameter \"source\" must be not null.", ex.Message);
+            Assert.StartsWith("Value cannot be null. (Parameter 'source')", ex.Message);
         }
 
         [Fact]
@@ -95,7 +95,7 @@ public abstract partial class ImageFrameCollectionTests
             ArgumentNullException ex = Assert.Throws<ArgumentNullException>(
                 () => this.Collection.InsertFrame(1, null));
 
-            Assert.StartsWith("Parameter \"source\" must be not null.", ex.Message);
+            Assert.StartsWith("Value cannot be null. (Parameter 'source')", ex.Message);
         }
 
         [Fact]