diff --git a/Cargo.toml b/Cargo.toml
index bbb40ab..4948d04 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.9"
+version = "0.6.10"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"
diff --git a/src/util_file.rs b/src/util_file.rs
index 65eb5ac..266d714 100644
--- a/src/util_file.rs
+++ b/src/util_file.rs
@@ -119,14 +119,13 @@ pub fn find_parents_exists_dir(dir: &str) -> Option<PathBuf> {
 }
 
 #[cfg(feature = "use_serde")]
-pub fn read_json_config<T>(config: Option<String>, files: &[String]) -> XResult<Option<(PathBuf, T)>> {
+pub fn read_json_config<T>(config: Option<String>, files: &[String]) -> XResult<Option<(PathBuf, T)>> where T: serde::de::DeserializeOwned {
     let config_path_buf_opt = read_config(config, files);
     match config_path_buf_opt {
         None => Ok(None),
         Some(config_path_buf) => {
-            // information!("Read config: {}", config_path_buf);
-            let config_content = fs::read_to_string(config_path_buf)?;
-            Ok(Some((config_path_buf, serde_json::from_str(&config_content)?)))
+            let json_config: T = serde_json::from_reader(std::fs::File::open(&config_path_buf)?)?;
+            Ok(Some((config_path_buf, json_config)))
         }
     }
 }