diff --git a/logback-core/src/main/java/ch/qos/logback/core/AsyncAppenderBase.java b/logback-core/src/main/java/ch/qos/logback/core/AsyncAppenderBase.java
index 0b13be0086..a51f6efec3 100755
--- a/logback-core/src/main/java/ch/qos/logback/core/AsyncAppenderBase.java
+++ b/logback-core/src/main/java/ch/qos/logback/core/AsyncAppenderBase.java
@@ -166,7 +166,7 @@ protected void append(E eventObject) {
         put(eventObject);
     }
 
-    private boolean isQueueBelowDiscardingThreshold() {
+    public boolean isQueueBelowDiscardingThreshold() {
         return (blockingQueue.remainingCapacity() < discardingThreshold);
     }