diff --git a/libconfig/src/lib.rs b/libconfig/src/lib.rs
index 0b42072..7866e94 100644
--- a/libconfig/src/lib.rs
+++ b/libconfig/src/lib.rs
@@ -152,7 +152,7 @@ impl Config {
             let root_dir = fs.root_dir();
 
             match root_dir.create_file("/CONFIG.TXT") {
-                Ok(file) => {
+                Ok(mut file) => {
                     file.truncate()?;
                 },
                 Err(e) => {
@@ -230,6 +230,9 @@ impl Config {
         Ok(())
     }
     pub fn write_str<'b>(&mut self, key: &str, data: &str) -> Result<'b, ()>{
+        let call_remove_config_key_bin = false;
+        let call_remove_config_txt = false;
+
         if let Some(fs) = &self.fs {
             let root_dir = fs.root_dir();
 
@@ -254,7 +257,7 @@ impl Config {
                 file.seek(SeekFrom::End(0))?;
                 file.write_all(&["\n", key, "=", data, "\n"].concat().as_bytes())?;
 
-                self.remove_config_key_bin(key)?;
+                call_remove_config_key_bin = true;
             } else {
                 root_dir.create_dir("/CONFIG")?;
                 match root_dir.create_file(config_key_bin) {
@@ -267,12 +270,18 @@ impl Config {
                     }
                 };
 
-                self.remove_config_txt(key)?;
+                call_remove_config_txt = true;
             }
-
-            Ok(())
         } else {
             Err(Error::NoConfig)
         }
+
+        if call_remove_config_key_bin {
+            self.remove_config_key_bin(key)?;
+        }
+        if call_remove_config_txt {
+            self.remove_config_txt(key)?;
+        }
+        Ok(())
     }
 }