diff --git a/java-collections-maps-3/README.md b/java-collections-maps-3/README.md
index ab6a37d00c..ed68eb00a0 100644
--- a/java-collections-maps-3/README.md
+++ b/java-collections-maps-3/README.md
@@ -3,6 +3,6 @@
 This module contains articles about Map data structures in Java.
 
 ### Relevant Articles: 
-- [Java Map With Case-Insensitive Keys](https://www.baeldung.com/java-map-with-case-insensitive-keys/)
+
 - More articles: [[<-- prev>]](/../java-collections-maps)
 - More articles: [[<-- prev>]](/../java-collections-maps-2)
diff --git a/java-collections-maps-3/src/test/java/com/baeldung/map/caseinsensitivekeys/CaseInsensitiveMapUnitTest.java b/java-collections-maps-3/src/test/java/com/baeldung/map/caseinsensitivekeys/CaseInsensitiveMapUnitTest.java
index 60dd1da9c0..37d9af7535 100644
--- a/java-collections-maps-3/src/test/java/com/baeldung/map/caseinsensitivekeys/CaseInsensitiveMapUnitTest.java
+++ b/java-collections-maps-3/src/test/java/com/baeldung/map/caseinsensitivekeys/CaseInsensitiveMapUnitTest.java
@@ -25,7 +25,6 @@ public class CaseInsensitiveMapUnitTest {
         commonsHashMap.put("ABC", 2);
 
         assertEquals(1, commonsHashMap.size());
-
     }
 
     @Test
@@ -35,7 +34,6 @@ public class CaseInsensitiveMapUnitTest {
         linkedHashMap.put("ABC", 2);
 
         assertEquals(1, linkedHashMap.size());
-
     }
 
     @Test
@@ -44,8 +42,8 @@ public class CaseInsensitiveMapUnitTest {
         treeMap.put("abc", 1);
         treeMap.put("ABC", 2);
 
-        assertEquals((Integer)2, treeMap.get("aBc"));
-        assertEquals((Integer)2, treeMap.get("ABc"));
+        assertEquals(2, treeMap.get("aBc").intValue());
+        assertEquals(2, treeMap.get("ABc").intValue());
     }
 
     @Test
@@ -54,8 +52,8 @@ public class CaseInsensitiveMapUnitTest {
         commonsHashMap.put("abc", 1);
         commonsHashMap.put("ABC", 2);
 
-        assertEquals((Integer)2, commonsHashMap.get("aBc"));
-        assertEquals((Integer)2, commonsHashMap.get("ABc"));
+        assertEquals(2, commonsHashMap.get("aBc").intValue());
+        assertEquals(2, commonsHashMap.get("ABc").intValue());
     }
 
     @Test
@@ -64,8 +62,8 @@ public class CaseInsensitiveMapUnitTest {
         linkedHashMap.put("abc", 1);
         linkedHashMap.put("ABC", 2);
 
-        assertEquals((Integer)2, linkedHashMap.get("aBc"));
-        assertEquals((Integer)2, linkedHashMap.get("ABc"));
+        assertEquals(2, linkedHashMap.get("aBc").intValue());
+        assertEquals(2, linkedHashMap.get("ABc").intValue());
     }
 
     @Test