diff --git a/jetty-util/src/main/java/org/eclipse/jetty/util/RolloverFileOutputStream.java b/jetty-util/src/main/java/org/eclipse/jetty/util/RolloverFileOutputStream.java
index f4db2930bed..ef4d16fab3f 100644
--- a/jetty-util/src/main/java/org/eclipse/jetty/util/RolloverFileOutputStream.java
+++ b/jetty-util/src/main/java/org/eclipse/jetty/util/RolloverFileOutputStream.java
@@ -212,7 +212,10 @@ public class RolloverFileOutputStream extends FilterOutputStream
     {
         _rollTask = new RollTask();
         midnight = nextMidnight(midnight);
-        __rollover.schedule(_rollTask,midnight.toInstant().toEpochMilli() - now.toInstant().toEpochMilli());
+        synchronized(RolloverFileOutputStream.class)
+        {
+            __rollover.schedule(_rollTask,midnight.toInstant().toEpochMilli() - now.toInstant().toEpochMilli());
+        }
     }
 
     /* ------------------------------------------------------------ */