diff --git a/src/meta.rs b/src/meta.rs
index 00c77c5..5a6d981 100644
--- a/src/meta.rs
+++ b/src/meta.rs
@@ -155,7 +155,7 @@ mod tests {
             let mut file = std::fs::File::create(file)?;
 
             match file.write_all(bytes) {
-                Ok(res) => {
+                Ok(_res) => {
                     Ok(())
                 }
                 Err(err) => {