diff --git a/tds/src/main/java/thredds/server/config/TdsInit.java b/tds/src/main/java/thredds/server/config/TdsInit.java
index dfba33dd63..eee7589ee1 100644
--- a/tds/src/main/java/thredds/server/config/TdsInit.java
+++ b/tds/src/main/java/thredds/server/config/TdsInit.java
@@ -399,7 +399,7 @@ private void readThreddsConfig() {
     max = ThreddsConfig.getInt("RandomAccessFile.maxFiles", 500);
     secs = ThreddsConfig.getSeconds("RandomAccessFile.scour", 11 * 60);
     if (max > 0) {
-      RandomAccessFile.setGlobalFileCache(new FileCache("RandomAccessFile", min, max, -1, secs));
+      RandomAccessFile.setGlobalFileCache(new FileCache("RandomAccessFile", min, max, -1, secs, true));
       startupLog.info("TdsInit: RandomAccessFile.initPartitionCache= [" + min + "," + max + "] scour = " + secs);
     }