diff --git a/commons/src/main/java/org/archive/util/ObjectIdentityBdbCache.java b/commons/src/main/java/org/archive/util/ObjectIdentityBdbCache.java
index 995715d7..b05730fc 100644
--- a/commons/src/main/java/org/archive/util/ObjectIdentityBdbCache.java
+++ b/commons/src/main/java/org/archive/util/ObjectIdentityBdbCache.java
@@ -394,9 +394,11 @@ implements ObjectIdentityCache<String, V>, Closeable, Serializable {
     }
 
     /** An incremental, poll-based expunger.
+     * 
+     * Package-protected for unit-test visibility. 
      */
     @SuppressWarnings("unchecked")
-    private synchronized void pageOutStaleEntries() {
+    synchronized void pageOutStaleEntries() {
         int c = 0;
         long startTime = System.currentTimeMillis();
         for(SoftEntry<V> entry; (entry = (SoftEntry<V>)refQueue.poll()) != null;) {
diff --git a/commons/src/test/java/org/archive/util/ObjectIdentityBdbCacheTest.java b/commons/src/test/java/org/archive/util/ObjectIdentityBdbCacheTest.java
index 325003d5..5a2fb9db 100644
--- a/commons/src/test/java/org/archive/util/ObjectIdentityBdbCacheTest.java
+++ b/commons/src/test/java/org/archive/util/ObjectIdentityBdbCacheTest.java
@@ -181,11 +181,12 @@ public class ObjectIdentityBdbCacheTest extends TmpDirTestCase {
         assertEquals(cache.size(), 10000);
         TestUtils.forceScarceMemory();
         Thread.sleep(3000);
-        // The 'canary' trick makes this explicit expunge, or
-        // an expunge triggered by a get() or put...(), unnecessary
-        // cache.expungeStaleEntries();
+        // The 'canary' trick may make this explicit page-out, or
+        // a page-out riggered by a get() or put...(), unnecessary --
+        // but we include anyway.
+        cache.pageOutStaleEntries();
         System.out.println(cache.size()+","+cache.memMap.size());
-        assertEquals(0, cache.memMap.size());
+        assertEquals("memMap not cleared", 0, cache.memMap.size());
     }