diff --git a/src/main.rs b/src/main.rs
index 0b027a9..6cd2d4b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,12 +10,8 @@ struct Args {
 
 fn compute_size(path: PathBuf) -> Result<u64, std::io::Error> {
     if path.is_dir() {
-        std::fs::read_dir(path)?.fold(Ok(0_u64), |counter, entry| -> Result<u64, std::io::Error> {
-            if let Ok(counter) = counter {
-                Ok(counter + compute_size(entry?.path())?)
-            } else {
-                counter
-            }
+        std::fs::read_dir(path)?.try_fold(0_u64, |counter, entry| -> Result<u64, std::io::Error> {
+            Ok(counter + compute_size(entry?.path())?)
         })
     } else {
         Ok(std::fs::metadata(path)?.len())