diff --git a/src/config/jsonconfig.rs b/src/config/jsonconfig.rs
index f41f8763..904787c0 100644
--- a/src/config/jsonconfig.rs
+++ b/src/config/jsonconfig.rs
@@ -1,5 +1,6 @@
 extern crate serde_json;
 use std::path::PathBuf;
+use errors::*;
 
 /// The JSON configuration is **deprecated** and will be removed in the near future.
 /// Please migrate to the TOML configuration.
@@ -32,9 +33,9 @@ pub struct JsonConfig {
 /// assert_eq!(config.dest, Some(PathBuf::from("htmlbook")));
 /// ```
 impl JsonConfig {
-    pub fn from_json(input: &str) -> Result<Self, String> {
+    pub fn from_json(input: &str) -> Result<Self> {
         let config: JsonConfig = serde_json::from_str(input)
-                                        .map_err(|e| format!("Could not parse JSON: {}", e))?;
+                                        .chain_err(|| format!("Could not parse JSON"))?;
 
         return Ok(config);
     }
diff --git a/src/config/tomlconfig.rs b/src/config/tomlconfig.rs
index 90cfa4c6..9c6851c5 100644
--- a/src/config/tomlconfig.rs
+++ b/src/config/tomlconfig.rs
@@ -1,5 +1,6 @@
 extern crate toml;
 use std::path::PathBuf;
+use errors::*;
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub struct TomlConfig {
@@ -43,9 +44,9 @@ pub struct TomlHtmlConfig {
 /// assert_eq!(config.output.unwrap().html.unwrap().destination, Some(PathBuf::from("htmlbook")));
 /// ```
 impl TomlConfig {
-    pub fn from_toml(input: &str) -> Result<Self, String> {
+    pub fn from_toml(input: &str) -> Result<Self> {
         let config: TomlConfig = toml::from_str(input)
-                                        .map_err(|e| format!("Could not parse TOML: {}", e))?;
+                                        .chain_err(|| "Could not parse TOML")?;
         
         return Ok(config);
     }