diff -r 18b3a9a85716 -r e678bb6beb1f rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java	Fri Feb 27 18:11:54 2015 +0100
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java	Wed Apr 15 17:21:28 2015 +0200
@@ -691,6 +691,7 @@
         @Override
         protected void requireResource(String resourcePath) throws IOException {
             requireResourceImpl(resourcePath);
+            super.asBinary.remove(resourcePath);
         }
     }
 
@@ -791,6 +792,7 @@
         @Override
         protected void requireResource(String resourcePath) throws IOException {
             requireResourceImpl(resourcePath);
+            super.asBinary.remove(resourcePath);
         }
     }
 }