test/jdk/javadoc/tool/CheckResourceKeys.java

@@ -146,11 +146,11 @@
             if (rk.startsWith("doclet.usage.") || rk.startsWith("doclet.xusage"))
                 continue;
             if (codeKeys.contains(rk))
                 continue;
 
-            error("Resource key not found in code: " + rk);
+            error("Resource key not found in code: '" + rk + '"');
         }
     }
 
     /**
      * For all strings in the code that look like they might be