diff --git a/src/index/lock.rs b/src/index/lock.rs
index 960f311..44725f9 100644
--- a/src/index/lock.rs
+++ b/src/index/lock.rs
@@ -69,7 +69,7 @@ impl Lock {
                 break;
             }
         }
-        if locks.iter().count() == 0 {
+        if locks.is_empty() {
             return Ok(false);
         }
         Ok(only_mine)