diff --git a/server/src/main/java/org/elasticsearch/indices/recovery/RecoveriesCollection.java b/server/src/main/java/org/elasticsearch/indices/recovery/RecoveriesCollection.java
index bbb02231e7a59..6b442750c1898 100644
--- a/server/src/main/java/org/elasticsearch/indices/recovery/RecoveriesCollection.java
+++ b/server/src/main/java/org/elasticsearch/indices/recovery/RecoveriesCollection.java
@@ -258,7 +258,7 @@ private class RecoveryMonitor extends AbstractRunnable {
         private final long recoveryId;
         private final TimeValue checkInterval;
 
-        private long lastSeenAccessTime;
+        private volatile long lastSeenAccessTime;
 
         private RecoveryMonitor(long recoveryId, long lastSeenAccessTime, TimeValue checkInterval) {
             this.recoveryId = recoveryId;