diff --git a/ext/xml/compat.c b/ext/xml/compat.c
index 6bdb2695c7d5..450362ef7efe 100644
--- a/ext/xml/compat.c
+++ b/ext/xml/compat.c
@@ -652,11 +652,6 @@ XML_GetCurrentByteCount(XML_Parser parser)
 	return (int) XML_GetCurrentByteIndex(parser);
 }
 
-PHP_XML_API const XML_Char *XML_ExpatVersion(void)
-{
-	return (const XML_Char *) "1.0";
-}
-
 PHP_XML_API void
 XML_ParserFree(XML_Parser parser)
 {
diff --git a/ext/xml/expat_compat.h b/ext/xml/expat_compat.h
index 94ca8aeb4c35..1cb6f5d140e5 100644
--- a/ext/xml/expat_compat.h
+++ b/ext/xml/expat_compat.h
@@ -148,7 +148,6 @@ PHP_XML_API int  XML_GetCurrentLineNumber(XML_Parser);
 PHP_XML_API int  XML_GetCurrentColumnNumber(XML_Parser);
 PHP_XML_API long XML_GetCurrentByteIndex(XML_Parser);
 PHP_XML_API int  XML_GetCurrentByteCount(XML_Parser);
-PHP_XML_API const XML_Char *XML_ExpatVersion(void);
 PHP_XML_API void XML_ParserFree(XML_Parser);
 
 #elif defined(HAVE_LIBEXPAT)