diff --git a/src/storage/json/parser.rs b/src/storage/json/parser.rs
index c752e20a..7011b6c2 100644
--- a/src/storage/json/parser.rs
+++ b/src/storage/json/parser.rs
@@ -1,5 +1,7 @@
 use std::collections::HashMap;
 use std::error::Error;
+use std::fmt::{Debug, Display, Formatter};
+use std::fmt;
 
 use serde_json::{Value, from_str};
 use serde_json::error::Result as R;
@@ -25,6 +27,24 @@ impl JsonHeaderParser {
 
 }
 
+impl Display for JsonHeaderParser {
+
+    fn fmt(&self, fmt: &mut Formatter) -> fmt::Result {
+        write!(fmt, "JsonHeaderParser");
+        Ok(())
+    }
+
+}
+
+impl Debug for JsonHeaderParser {
+
+    fn fmt(&self, fmt: &mut Formatter) -> fmt::Result {
+        write!(fmt, "JsonHeaderParser, Spec: {:?}", self.spec);
+        Ok(())
+    }
+
+}
+
 impl FileHeaderParser for JsonHeaderParser {
 
     fn read(&self, string: Option<String>)
diff --git a/src/storage/parser.rs b/src/storage/parser.rs
index c627e56a..8afb0d9c 100644
--- a/src/storage/parser.rs
+++ b/src/storage/parser.rs
@@ -83,7 +83,7 @@ impl Display for ParserError {
 
 }
 
-pub trait FileHeaderParser : Sized {
+pub trait FileHeaderParser : Sized + Debug + Display {
     fn read(&self, string: Option<String>) -> Result<FileHeaderData, ParserError>;
     fn write(&self, data: &FileHeaderData) -> Result<String, ParserError>;
 }