diff --git a/spotbugs-exclude.xml b/spotbugs-exclude.xml
index 3f87cfef8725..0e8a67c73b73 100644
--- a/spotbugs-exclude.xml
+++ b/spotbugs-exclude.xml
@@ -104,9 +104,6 @@
     <Match>
         <Bug pattern="NP_IMMEDIATE_DEREFERENCE_OF_READLINE" />
     </Match>
-    <Match>
-        <Bug pattern="RV_RETURN_VALUE_IGNORED" />
-    </Match>
     <Match>
         <Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS" />
     </Match>
diff --git a/src/main/java/com/thealgorithms/ciphers/HillCipher.java b/src/main/java/com/thealgorithms/ciphers/HillCipher.java
index a858eb402939..14b98b3cc2f8 100644
--- a/src/main/java/com/thealgorithms/ciphers/HillCipher.java
+++ b/src/main/java/com/thealgorithms/ciphers/HillCipher.java
@@ -144,7 +144,6 @@ public static int determinant(int[][] a, int n) {
 
     // Function to implement Hill Cipher
     static void hillCipher(String message) {
-        message.toUpperCase();
         System.out.println("What do you want to process from the message?");
         System.out.println("Press 1: To Encrypt");
         System.out.println("Press 2: To Decrypt");