Use is empty

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/org/traccar/session/cache/CacheManager.java b/src/main/java/org/traccar/session/cache/CacheManager.java
index 58320cf29..0aadb3692 100644
--- a/src/main/java/org/traccar/session/cache/CacheManager.java
+++ b/src/main/java/org/traccar/session/cache/CacheManager.java
@@ -381,7 +381,7 @@ public class CacheManager implements BroadcastInterface {
             var key = new CacheKey(clazz, id);
             deviceCache.computeIfPresent(key, (k, value) -> {
                 value.release(deviceId);
-                return value.getReferences().size() > 0 ? value : null;
+                return value.getReferences().isEmpty() ? null : value;
             });
         }));
         devicePositions.remove(deviceId);