diff --git a/spring-context/src/main/java/org/springframework/context/event/AbstractApplicationEventMulticaster.java b/spring-context/src/main/java/org/springframework/context/event/AbstractApplicationEventMulticaster.java
index f22e0ceb721..76be0c05252 100644
--- a/spring-context/src/main/java/org/springframework/context/event/AbstractApplicationEventMulticaster.java
+++ b/spring-context/src/main/java/org/springframework/context/event/AbstractApplicationEventMulticaster.java
@@ -263,6 +263,24 @@ public abstract class AbstractApplicationEventMulticaster
 					if (supportsEvent(beanFactory, listenerBeanName, eventType)) {
 						ApplicationListener<?> listener =
 								beanFactory.getBean(listenerBeanName, ApplicationListener.class);
+
+						// Despite best efforts to avoid it, unwrapped proxies (singleton targets) can end up in the
+						// list of programmatically registered listeners. In order to avoid duplicates, we need to find
+						// and replace them by their proxy counterparts, because if both a proxy and its target end up
+						// in 'allListeners', listeners will fire twice.
+						ApplicationListener<?> unwrappedListener =
+								(ApplicationListener<?>) AopProxyUtils.getSingletonTarget(listener);
+						if (listener != unwrappedListener) {
+							if (filteredListeners != null && filteredListeners.contains(unwrappedListener)) {
+								filteredListeners.remove(unwrappedListener);
+								filteredListeners.add(listener);
+							}
+							if (allListeners.contains(unwrappedListener)) {
+								allListeners.remove(unwrappedListener);
+								allListeners.add(listener);
+							}
+						}
+
 						if (!allListeners.contains(listener) && supportsEvent(listener, eventType, sourceType)) {
 							if (retriever != null) {
 								if (beanFactory.isSingleton(listenerBeanName)) {