mark unused enums
diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index b8c45e6..d14089f 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -1966,10 +1966,10 @@
     "XML_ERROR_FILE_NOT_FOUND",

     "XML_ERROR_FILE_COULD_NOT_BE_OPENED",

     "XML_ERROR_FILE_READ_ERROR",

-    "XML_ERROR_ELEMENT_MISMATCH",

+    "UNUSED_XML_ERROR_ELEMENT_MISMATCH",

     "XML_ERROR_PARSING_ELEMENT",

     "XML_ERROR_PARSING_ATTRIBUTE",

-    "XML_ERROR_IDENTIFYING_TAG",

+    "UNUSED_XML_ERROR_IDENTIFYING_TAG",

     "XML_ERROR_PARSING_TEXT",

     "XML_ERROR_PARSING_CDATA",

     "XML_ERROR_PARSING_COMMENT",