diff --git a/src/main/java/org/apache/commons/lang3/concurrent/AbstractCircuitBreaker.java b/src/main/java/org/apache/commons/lang3/concurrent/AbstractCircuitBreaker.java
index 05c1cc974..a27d7f846 100644
--- a/src/main/java/org/apache/commons/lang3/concurrent/AbstractCircuitBreaker.java
+++ b/src/main/java/org/apache/commons/lang3/concurrent/AbstractCircuitBreaker.java
@@ -140,7 +140,7 @@ public abstract class AbstractCircuitBreaker<T> implements CircuitBreaker<T> {
      * {@code CircuitBreaker}.
      */
     protected enum State {
-        
+
         /** The closed state. */
         CLOSED {
             /**