diff --git a/src/main/java/org/apache/commons/collections4/IteratorUtils.java b/src/main/java/org/apache/commons/collections4/IteratorUtils.java
index 5918e8c7a..a4d9d8614 100644
--- a/src/main/java/org/apache/commons/collections4/IteratorUtils.java
+++ b/src/main/java/org/apache/commons/collections4/IteratorUtils.java
@@ -716,7 +716,7 @@ public class IteratorUtils {
         if (iterator != null) {
             while (iterator.hasNext()) {
                 final E element = iterator.next();
-                closure.execute(element);
+                closure.accept(element);
             }
         }
     }
@@ -742,7 +742,7 @@ public class IteratorUtils {
                 if (!iterator.hasNext()) {
                     return element;
                 }
-                closure.execute(element);
+                closure.accept(element);
             }
         }
         return null;
diff --git a/src/main/java/org/apache/commons/collections4/functors/ChainedClosure.java b/src/main/java/org/apache/commons/collections4/functors/ChainedClosure.java
index de2902c6c..892ec0b26 100644
--- a/src/main/java/org/apache/commons/collections4/functors/ChainedClosure.java
+++ b/src/main/java/org/apache/commons/collections4/functors/ChainedClosure.java
@@ -107,7 +107,7 @@ public class ChainedClosure<E> implements Closure<E>, Serializable {
     @Override
     public void execute(final E input) {
         for (final Closure<? super E> iClosure : iClosures) {
-            iClosure.execute(input);
+            iClosure.accept(input);
         }
     }
 
diff --git a/src/main/java/org/apache/commons/collections4/functors/ClosureTransformer.java b/src/main/java/org/apache/commons/collections4/functors/ClosureTransformer.java
index 6bd24e8b8..f329e5e87 100644
--- a/src/main/java/org/apache/commons/collections4/functors/ClosureTransformer.java
+++ b/src/main/java/org/apache/commons/collections4/functors/ClosureTransformer.java
@@ -76,7 +76,7 @@ public class ClosureTransformer<T> implements Transformer<T, T>, Serializable {
      */
     @Override
     public T transform(final T input) {
-        iClosure.execute(input);
+        iClosure.accept(input);
         return input;
     }
 
diff --git a/src/main/java/org/apache/commons/collections4/functors/ForClosure.java b/src/main/java/org/apache/commons/collections4/functors/ForClosure.java
index 766b2d3e3..907d6e80a 100644
--- a/src/main/java/org/apache/commons/collections4/functors/ForClosure.java
+++ b/src/main/java/org/apache/commons/collections4/functors/ForClosure.java
@@ -78,7 +78,7 @@ public class ForClosure<E> implements Closure<E> {
     @Override
     public void execute(final E input) {
         for (int i = 0; i < iCount; i++) {
-            iClosure.execute(input);
+            iClosure.accept(input);
         }
     }
 
diff --git a/src/main/java/org/apache/commons/collections4/functors/IfClosure.java b/src/main/java/org/apache/commons/collections4/functors/IfClosure.java
index 17a1fd349..277981593 100644
--- a/src/main/java/org/apache/commons/collections4/functors/IfClosure.java
+++ b/src/main/java/org/apache/commons/collections4/functors/IfClosure.java
@@ -113,9 +113,9 @@ public class IfClosure<E> implements Closure<E>, Serializable {
     @Override
     public void execute(final E input) {
         if (iPredicate.evaluate(input)) {
-            iTrueClosure.execute(input);
+            iTrueClosure.accept(input);
         } else {
-            iFalseClosure.execute(input);
+            iFalseClosure.accept(input);
         }
     }
 
diff --git a/src/main/java/org/apache/commons/collections4/functors/SwitchClosure.java b/src/main/java/org/apache/commons/collections4/functors/SwitchClosure.java
index 9a6b906e4..1b5013f6e 100644
--- a/src/main/java/org/apache/commons/collections4/functors/SwitchClosure.java
+++ b/src/main/java/org/apache/commons/collections4/functors/SwitchClosure.java
@@ -143,11 +143,11 @@ public class SwitchClosure<E> implements Closure<E>, Serializable {
     public void execute(final E input) {
         for (int i = 0; i < iPredicates.length; i++) {
             if (iPredicates[i].evaluate(input)) {
-                iClosures[i].execute(input);
+                iClosures[i].accept(input);
                 return;
             }
         }
-        iDefault.execute(input);
+        iDefault.accept(input);
     }
 
     /**
diff --git a/src/main/java/org/apache/commons/collections4/functors/WhileClosure.java b/src/main/java/org/apache/commons/collections4/functors/WhileClosure.java
index e4e69598e..5bded3e02 100644
--- a/src/main/java/org/apache/commons/collections4/functors/WhileClosure.java
+++ b/src/main/java/org/apache/commons/collections4/functors/WhileClosure.java
@@ -80,10 +80,10 @@ public class WhileClosure<E> implements Closure<E> {
     @Override
     public void execute(final E input) {
         if (iDoLoop) {
-            iClosure.execute(input);
+            iClosure.accept(input);
         }
         while (iPredicate.evaluate(input)) {
-            iClosure.execute(input);
+            iClosure.accept(input);
         }
     }