diff --git a/core-java-collections/src/main/java/com/baeldung/sort/SortHashMap.java b/core-java-collections/src/main/java/com/baeldung/sort/SortHashMap.java
index 938f740e9a..c803e8f193 100644
--- a/core-java-collections/src/main/java/com/baeldung/sort/SortHashMap.java
+++ b/core-java-collections/src/main/java/com/baeldung/sort/SortHashMap.java
@@ -63,8 +63,8 @@ public class SortHashMap {
     }
 
     private static void treeSetByKey() {
-        SortedSet<String> keys = new TreeSet<>(map.keySet());
-        System.out.println(keys);
+        SortedSet<String> keysSet = new TreeSet<>(map.keySet());
+        System.out.println(keysSet);
     }
 
     private static void treeMapSortByKey() {