diff -r 50ad005d1597 -r 1d850aa501bb rt/aot/src/test/java/org/apidesign/bck2brwsr/aot/ExportPublicPackagesTest.java
--- a/rt/aot/src/test/java/org/apidesign/bck2brwsr/aot/ExportPublicPackagesTest.java	Thu Nov 20 05:56:47 2014 +0100
+++ b/rt/aot/src/test/java/org/apidesign/bck2brwsr/aot/ExportPublicPackagesTest.java	Sun Nov 23 21:59:21 2014 +0100
@@ -66,8 +66,22 @@
         Set<String> keep = new TreeSet<>();
         Bck2BrwsrJars.exportPublicPackages(attr, keep);
         
-        assertEquals(keep.size(), 7, "Two: " + keep);
+        assertEquals(keep.size(), 7, "Seven: " + keep);
         assertEquals(keep.toString(), "[org/eclipse/mylyn/commons/core/, org/eclipse/mylyn/commons/core/io/, org/eclipse/mylyn/commons/core/net/, org/eclipse/mylyn/commons/core/operations/, org/eclipse/mylyn/commons/core/storage/, org/eclipse/mylyn/internal/commons/core/, org/eclipse/mylyn/internal/commons/core/operations/]");
     }
+    
+    @Test public void lookupHeaders() throws Exception {
+        Attributes attr = new Attributes();
+        attr.putValue("OpenIDE-Module-Public-Packages",
+            "org.openide.util.*, org.openide.util.lookup.*, org.openide.util.lookup.implspi.*"
+        );
+        Set<String> keep = new TreeSet<>();
+        Bck2BrwsrJars.exportPublicPackages(attr, keep);
+        
+        assertEquals(keep.size(), 3, "Three: " + keep);
+        assertTrue(keep.contains("org/openide/util/"), "main pkg: " + keep);
+        assertTrue(keep.contains("org/openide/util/lookup/"), "util pkg: " + keep);
+        assertTrue(keep.contains("org/openide/util/lookup/implspi/"), "spiimpl pkg: " + keep);
+    }
 
 }