diff --git a/source/jstruct/exceptions.d b/source/jstruct/exceptions.d
index 8f18e06..aa9d868 100644
--- a/source/jstruct/exceptions.d
+++ b/source/jstruct/exceptions.d
@@ -19,7 +19,7 @@ public abstract class JStructException : Exception
  */
 public final class SerializationError : JStructException
 {
-	this()
+	protected this()
 	{
 		super("Error serializing");
 	}
@@ -30,7 +30,7 @@ public final class SerializationError : JStructException
  */
 public final class DeserializationError : JStructException
 {
-	this()
+	protected this()
 	{
 		super("Error deserializing");
 	}