diff --git a/src/cfg.rs b/src/cfg.rs
index b8a2c85..26f8263 100644
--- a/src/cfg.rs
+++ b/src/cfg.rs
@@ -71,19 +71,13 @@ impl Config {
         }
     }
 
-    pub fn game_backuper_cfg(&self) -> String {
-        match self.get_str("game_backuper_cfg") {
-            Some(s) => {
-                let mut pb = crate::utils::get_exe_path_else_current();
-                pb.push(s);
-                pb.to_string_lossy().to_string()
-            },
-            None => {
-                let mut pb = crate::utils::get_exe_path_else_current();
-                pb.push("game_backuper.yml");
-                pb.to_string_lossy().to_string()
-            },
+    pub fn game_backuper_cfg(&self) -> Option<String> {
+        let mut pb = crate::utils::get_exe_path_else_current();
+        pb.push(self.get_str("game_backuper_cfg").unwrap_or("game_backuper.yml"));
+        if !pb.exists() {
+            return None;
         }
+        Some(pb.to_string_lossy().to_string())
     }
 
     pub fn game_backuper_exe(&self) -> String {
diff --git a/src/main.rs b/src/main.rs
index d89e3db..07c2d90 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -38,8 +38,7 @@ impl Main {
             Some(cml) => cml,
             None => {
                 let mut def = vec![self._cfg.game_backuper_exe()];
-                let cfg_path = self._cfg.game_backuper_cfg();
-                if std::fs::exists(&cfg_path).unwrap_or(false) {
+                if let Some(cfg_path) = self._cfg.game_backuper_cfg() {
                     def.push(String::from("-c"));
                     def.push(cfg_path);
                 }
@@ -74,8 +73,7 @@ impl Main {
             Some(cml) => cml,
             None => {
                 let mut def = vec![self._cfg.game_backuper_exe()];
-                let cfg_path = self._cfg.game_backuper_cfg();
-                if std::fs::exists(&cfg_path).unwrap_or(false) {
+                if let Some(cfg_path) = self._cfg.game_backuper_cfg() {
                     def.push(String::from("-c"));
                     def.push(cfg_path);
                 }