diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index 33cf19f..de3d2fb 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -1977,10 +1977,8 @@ const char* XMLDocument::_errorNames[XML_ERROR_COUNT] = {
     "XML_ERROR_FILE_NOT_FOUND",
     "XML_ERROR_FILE_COULD_NOT_BE_OPENED",
     "XML_ERROR_FILE_READ_ERROR",
-    "UNUSED_XML_ERROR_ELEMENT_MISMATCH",
     "XML_ERROR_PARSING_ELEMENT",
     "XML_ERROR_PARSING_ATTRIBUTE",
-    "UNUSED_XML_ERROR_IDENTIFYING_TAG",
     "XML_ERROR_PARSING_TEXT",
     "XML_ERROR_PARSING_CDATA",
     "XML_ERROR_PARSING_COMMENT",
@@ -2327,6 +2325,7 @@ void XMLDocument::SetError( XMLError error, int lineNum, const char* format, ...
     size_t BUFFER_SIZE = 1000;
     char* buffer = new char[BUFFER_SIZE];
 
+    TIXMLASSERT(sizeof(error) <= sizeof(int));
     TIXML_SNPRINTF(buffer, BUFFER_SIZE, "Error=%s ErrorID=%d (0x%x) Line number=%d", ErrorIDToName(error), int(error), int(error), lineNum);
 
 	if (format) {
diff --git a/tinyxml2.h b/tinyxml2.h
index 9e9c1d0..950c2da 100755
--- a/tinyxml2.h
+++ b/tinyxml2.h
@@ -525,10 +525,8 @@ enum XMLError {
     XML_ERROR_FILE_NOT_FOUND,
     XML_ERROR_FILE_COULD_NOT_BE_OPENED,
     XML_ERROR_FILE_READ_ERROR,
-    UNUSED_XML_ERROR_ELEMENT_MISMATCH,	// remove at next major version
     XML_ERROR_PARSING_ELEMENT,
     XML_ERROR_PARSING_ATTRIBUTE,
-    UNUSED_XML_ERROR_IDENTIFYING_TAG,	// remove at next major version
     XML_ERROR_PARSING_TEXT,
     XML_ERROR_PARSING_CDATA,
     XML_ERROR_PARSING_COMMENT,