src/hotspot/share/classfile/javaClasses.cpp

@@ -4124,11 +4124,11 @@
   // the class of the loader.
   if (name != NULL) {
     ss.print("\"%s\" (instance of %s", name, loader->klass()->external_name());
     seperator = ", ";
   } else {
-    ss.print("%s", loader->klass()->external_name());
+    ss.print("instance of %s", loader->klass()->external_name());
     seperator = " (";
   }
 
   oop pl = java_lang_ClassLoader::parent(loader);
   if (pl != NULL) {