diff --git a/Src/Newtonsoft.Json.Tests/JsonConvertTest.cs b/Src/Newtonsoft.Json.Tests/JsonConvertTest.cs
index 0a9925b71..b274bc5cd 100644
--- a/Src/Newtonsoft.Json.Tests/JsonConvertTest.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonConvertTest.cs
@@ -1592,7 +1592,7 @@ public void CustomDoubleRounding()
         [Test]
         public void DoubleRoundTrip()
         {
-            var x = 0.1 + 0.2;
+            double x = 0.1 + 0.2;
             var y = JsonConvert.DeserializeObject<double>(JsonConvert.SerializeObject(x));
             Assert.AreEqual(x, y);
         }