diff --git a/csharp/src/Google.Protobuf.Test/JsonFormatterTest.cs b/csharp/src/Google.Protobuf.Test/JsonFormatterTest.cs
index b363c7f63f769..5304134240476 100644
--- a/csharp/src/Google.Protobuf.Test/JsonFormatterTest.cs
+++ b/csharp/src/Google.Protobuf.Test/JsonFormatterTest.cs
@@ -862,12 +862,12 @@ private static void AssertWriteValue(object value, string expectedJson, JsonForm
 
         /// <summary>
         /// Checks that the actual JSON is the same as the expected JSON - but after replacing
-        /// all apostrophes in the expected JSON with double quotes and trimming leading whitespace.
+        /// all apostrophes in the expected JSON with double quotes, trimming leading whitespace and normalizing new lines.
         /// This basically makes the tests easier to read.
         /// </summary>
         private static void AssertJson(string expectedJsonWithApostrophes, string actualJson)
         {
-            var expectedJson = expectedJsonWithApostrophes.Replace("'", "\"").TrimStart();
+            var expectedJson = expectedJsonWithApostrophes.Replace("'", "\"").Replace("\r\n", "\n").TrimStart();
             Assert.AreEqual(expectedJson, actualJson);
         }
     }