diff --git a/engine/src/main/java/org/archive/crawler/frontier/AbstractFrontier.java b/engine/src/main/java/org/archive/crawler/frontier/AbstractFrontier.java
index 81f269d8..913aa032 100644
--- a/engine/src/main/java/org/archive/crawler/frontier/AbstractFrontier.java
+++ b/engine/src/main/java/org/archive/crawler/frontier/AbstractFrontier.java
@@ -345,7 +345,7 @@ public abstract class AbstractFrontier
             outbound = new ArrayBlockingQueue<CrawlURI>(200, true);
         }
         if(inbound==null) {
-            inbound = new ArrayBlockingQueue<InEvent>(40000, true);
+            inbound = new ArrayBlockingQueue<InEvent>(4000, true);
         }
         pause();
         startManagerThread();