diff --git a/src/main/java/org/apache/commons/collections4/SetUtils.java b/src/main/java/org/apache/commons/collections4/SetUtils.java
index 673b7bad1..0ed6a1ec3 100644
--- a/src/main/java/org/apache/commons/collections4/SetUtils.java
+++ b/src/main/java/org/apache/commons/collections4/SetUtils.java
@@ -97,7 +97,7 @@ public class SetUtils {
             return set;
         }
     }
-    
+
     /**
      * An empty unmodifiable sorted set.
      * This is not provided in the JDK.
diff --git a/src/main/java/org/apache/commons/collections4/list/SetUniqueList.java b/src/main/java/org/apache/commons/collections4/list/SetUniqueList.java
index b00b2d2f2..bbf16e001 100644
--- a/src/main/java/org/apache/commons/collections4/list/SetUniqueList.java
+++ b/src/main/java/org/apache/commons/collections4/list/SetUniqueList.java
@@ -16,7 +16,6 @@
  */
 package org.apache.commons.collections4.list;
 
-import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.Collection;
diff --git a/src/main/java/org/apache/commons/collections4/map/AbstractReferenceMap.java b/src/main/java/org/apache/commons/collections4/map/AbstractReferenceMap.java
index 4f4727f33..8e5ac2423 100644
--- a/src/main/java/org/apache/commons/collections4/map/AbstractReferenceMap.java
+++ b/src/main/java/org/apache/commons/collections4/map/AbstractReferenceMap.java
@@ -111,7 +111,7 @@ public abstract class AbstractReferenceMap<K, V> extends AbstractHashedMap<K, V>
             }
         }
 
-        private ReferenceStrength(final int value) {
+        ReferenceStrength(final int value) {
             this.value = value;
         }