--- org/codehaus/jam/internal/JamClassLoaderImpl.java      2004-12-10 13:41:34.000000000 +0100
+++ org/codehaus/jam/internal/JamClassLoaderImpl.java   2007-06-14 21:08:50.000000000 +0200
@@ -91,7 +91,7 @@
       // yet, that means we need to go get the outer class.  when that's
       // done, the inner class will in the cache (or not).
       int dollar = fd.indexOf('$');
-      if (dollar != -1) {
+      if (dollar > 0) {
         String outerName = fd.substring(0,dollar);
         ((ClassImpl)loadClass(outerName)).ensureLoaded();
         out = cacheGet(fd);