diff --git a/src/fileinfo.rs b/src/fileinfo.rs
index df907f3..1eb6a5b 100644
--- a/src/fileinfo.rs
+++ b/src/fileinfo.rs
@@ -19,11 +19,10 @@ impl FileInfo {
     pub fn hash(&self, seed: i64) -> Result<u128> {
         let file = fs::File::open(&self.path)?;
         let mapper = unsafe { Mmap::map(&file)? };
-        let final_hash = mapper.chunks(4096).fold(0u128, |acc, chunk: &[u8]| {
-            acc.wrapping_add(gxhash128(chunk, seed))
-        });
 
-        Ok(final_hash)
+        Ok(mapper
+            .chunks(4096)
+            .fold(0u128, |acc, chunk: &[u8]| acc ^ gxhash128(chunk, seed)))
     }
 
     pub fn initial_page_hash(&self, seed: i64) -> Result<u128> {