diff --git a/src/main/java/net/kemitix/mon/maybe/Just.java b/src/main/java/net/kemitix/mon/maybe/Just.java
index f801bde..77a258f 100644
--- a/src/main/java/net/kemitix/mon/maybe/Just.java
+++ b/src/main/java/net/kemitix/mon/maybe/Just.java
@@ -38,13 +38,14 @@ import java.util.stream.Stream;
  * @param <T> the type of the content
  * @author Paul Campbell (pcampbell@kemitix.net)
  */
+@SuppressWarnings("methodcount")
 @RequiredArgsConstructor(access = AccessLevel.PROTECTED)
 final class Just<T> implements Maybe<T> {
 
     private final T value;
 
     @Override
-    public <R> Maybe<R> flatMap(Function<T, Maybe<R>> f) {
+    public <R> Maybe<R> flatMap(final Function<T, Maybe<R>> f) {
         return f.apply(value);
     }
 
@@ -55,7 +56,7 @@ final class Just<T> implements Maybe<T> {
 
     @Override
     public boolean equals(final Object other) {
-        return other instanceof Just && Objects.equals(this.value, ((Just) other).value);
+        return other instanceof Just && Objects.equals(value, ((Just) other).value);
     }
 
     @Override
@@ -70,7 +71,7 @@ final class Just<T> implements Maybe<T> {
 
     @Override
     public T orElse(final T otherValue) {
-        return this.value;
+        return value;
     }
 
     @Override
diff --git a/src/main/java/net/kemitix/mon/maybe/Nothing.java b/src/main/java/net/kemitix/mon/maybe/Nothing.java
index 7a72d46..05f033d 100644
--- a/src/main/java/net/kemitix/mon/maybe/Nothing.java
+++ b/src/main/java/net/kemitix/mon/maybe/Nothing.java
@@ -39,7 +39,7 @@ final class Nothing<T> implements Maybe<T> {
     static final Maybe<?> INSTANCE = new Nothing<>();
 
     @Override
-    public <R> Maybe<R> flatMap(Function<T, Maybe<R>> f) {
+    public <R> Maybe<R> flatMap(final Function<T, Maybe<R>> f) {
         return Maybe.nothing();
     }
 
diff --git a/src/main/java/net/kemitix/mon/result/Err.java b/src/main/java/net/kemitix/mon/result/Err.java
index d0c4cb4..e197dea 100644
--- a/src/main/java/net/kemitix/mon/result/Err.java
+++ b/src/main/java/net/kemitix/mon/result/Err.java
@@ -75,7 +75,7 @@ class Err<T> implements Result<T> {
     }
 
     @Override
-    public boolean equals(Object other) {
+    public boolean equals(final Object other) {
         return other instanceof Err && Objects.equals(error, ((Err) other).error);
     }
 
diff --git a/src/main/java/net/kemitix/mon/result/Success.java b/src/main/java/net/kemitix/mon/result/Success.java
index 9093b08..ec2aa58 100644
--- a/src/main/java/net/kemitix/mon/result/Success.java
+++ b/src/main/java/net/kemitix/mon/result/Success.java
@@ -78,7 +78,7 @@ class Success<T> implements Result<T> {
     }
 
     @Override
-    public boolean equals(Object other) {
+    public boolean equals(final Object other) {
         return other instanceof Success && Objects.equals(value, ((Success) other).value);
     }
 
diff --git a/src/test/java/net/kemitix/mon/ResultTest.java b/src/test/java/net/kemitix/mon/ResultTest.java
index 5e56fca..1386251 100644
--- a/src/test/java/net/kemitix/mon/ResultTest.java
+++ b/src/test/java/net/kemitix/mon/ResultTest.java
@@ -16,6 +16,7 @@ public class ResultTest implements WithAssertions {
         assertThat(Result.ok(1)).isNotEqualTo(Result.error(runtimeException));
         assertThat(Result.error(runtimeException)).isEqualTo(Result.error(runtimeException));
         assertThat(Result.ok(1).equals("1")).isFalse();
+        assertThat(Result.error(new RuntimeException()).equals("1")).isFalse();
     }
 
     @Test