diff --git a/DiscUtils.Core/InvalidFileSystemException.cs b/DiscUtils.Core/InvalidFileSystemException.cs
index 601bb2b..0984d25 100644
--- a/DiscUtils.Core/InvalidFileSystemException.cs
+++ b/DiscUtils.Core/InvalidFileSystemException.cs
@@ -56,17 +56,5 @@ public InvalidFileSystemException(string message)
         /// <param name="innerException">The inner exception.</param>
         public InvalidFileSystemException(string message, Exception innerException)
             : base(message, innerException) {}
-
-#if !NETSTANDARD1_5
-        /// <summary>
-        /// Initializes a new instance of the InvalidFileSystemException class.
-        /// </summary>
-        /// <param name="info">The serialization info.</param>
-        /// <param name="context">The streaming context.</param>
-        protected InvalidFileSystemException(SerializationInfo info, StreamingContext context)
-            : base(info, context)
-        {
-        }
-#endif
     }
-}
\ No newline at end of file
+}