1 files changed, 5 insertions, 5 deletions
diff --git a/src/org/traccar/FilterHandler.java b/src/org/traccar/FilterHandler.java
index a04789a28..c601016b4 100644
--- a/src/org/traccar/FilterHandler.java
+++ b/src/org/traccar/FilterHandler.java
@@ -21,11 +21,11 @@ import org.traccar.model.Position;
 
 public class FilterHandler extends BaseDataHandler {
 
-    private boolean filterInvalid;
-    private boolean filterZero;
-    private boolean filterDuplicate;
-    private int filterDistance;
-    private long filterLimit;
+    private final boolean filterInvalid;
+    private final boolean filterZero;
+    private final boolean filterDuplicate;
+    private final int filterDistance;
+    private final long filterLimit;
     
     public FilterHandler(
             boolean filterInvalid,