diff --git a/test/UnitTests/S3ecImplementedCryptographicOperationsTest.cs b/test/UnitTests/S3ecImplementedCryptographicOperationsTest.cs
index ddd17b7..42d7f2c 100644
--- a/test/UnitTests/S3ecImplementedCryptographicOperationsTest.cs
+++ b/test/UnitTests/S3ecImplementedCryptographicOperationsTest.cs
@@ -108,7 +108,7 @@ public static void DifferentLengthsReturnFalse(int byteLength)
             Assert.False(isEqualB, "value missing last byte, value");
         }
 
-#if BCL35
+#if !BCL35
         [Fact]
         public static void HasCorrectMethodImpl()
         {