diff --git a/slf4j-testing/src/main/java/org/slf4j/testing/MultithreadedInitializationTest.java b/slf4j-testing/src/main/java/org/slf4j/testing/MultithreadedInitializationTest.java
index 5cd3c9fa2..0cb1ea259 100644
--- a/slf4j-testing/src/main/java/org/slf4j/testing/MultithreadedInitializationTest.java
+++ b/slf4j-testing/src/main/java/org/slf4j/testing/MultithreadedInitializationTest.java
@@ -35,7 +35,7 @@ public void multiThreadedInitialization() throws InterruptedException, BrokenBar
 
         assertAllSubstLoggersAreFixed();
         long recordedEventCount = getRecordedEventCount();
-        int LENIENCY_COUNT = 21;
+        int LENIENCY_COUNT = 30;
 
         long expectedEventCount = eventCount.get() + extraLogEvents();