diff --git a/proxmox-io/src/sparse_copy.rs b/proxmox-io/src/sparse_copy.rs
index 9d09e6ad..fad1a51a 100644
--- a/proxmox-io/src/sparse_copy.rs
+++ b/proxmox-io/src/sparse_copy.rs
@@ -14,8 +14,7 @@ const BUF_SIZE: usize = 8192;
 /// This is implemented in a way which allows the compiler to utilize SIMD instructions.
 pub fn buffer_is_zero(buf: &[u8]) -> bool {
     !buf.chunks(128)
-        .map(|aa| aa.iter().fold(0, |a, b| a | b) != 0)
-        .any(|a| a)
+        .any(|aa| aa.iter().fold(0, |a, b| a | b) != 0)
 }
 
 /// Result of a sparse copy call.