diff --git a/src/main.rs b/src/main.rs
index 0fc8974..7fd84ce 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -85,14 +85,14 @@ fn read_inputfile(inputfile: String) -> Result<OnkostarEditor, FileError> {
 }
 
 fn write_outputfile(filename: String, content: &String) -> Result<(), FileError> {
-    let mut file = OpenOptions::new()
+    OpenOptions::new()
         .read(false)
         .write(true)
         .create(true)
         .truncate(true)
         .open(filename.clone())
-        .map_err(|err| FileError::Writing(filename.clone(), err.to_string()))?;
-    file.write_all(content.as_bytes())
+        .map_err(|err| FileError::Writing(filename.clone(), err.to_string()))?
+        .write_all(content.as_bytes())
         .map_err(|err| FileError::Writing(filename, err.to_string()))?;
     Ok(())
 }