diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 35b5597e..db15eae1 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -4022,7 +4022,8 @@ epilogProcessor(XML_Parser parser,
     int tok = XmlPrologTok(encoding, s, end, &next);
     eventEndPtr = next;
     switch (tok) {
-    case -XML_TOK_PROLOG_S:
+    /* report partial linebreak - it might be the last token */
+    case -XML_TOK_PROLOG_S: 
       if (defaultHandler) {
         eventEndPtr = next;
         reportDefault(parser, encoding, s, next);
diff --git a/expat/lib/xmltok_impl.c b/expat/lib/xmltok_impl.c
index 30d32903..f4a34387 100644
--- a/expat/lib/xmltok_impl.c
+++ b/expat/lib/xmltok_impl.c
@@ -1011,6 +1011,7 @@ PREFIX(prologTok)(const ENCODING *enc, const char *ptr, const char *end,
   case BT_CR:
     if (ptr + MINBPC(enc) == end) {
       *nextTokPtr = end;
+      /* indicate that this might be part of a CR/LF pair */
       return -XML_TOK_PROLOG_S;
     }
     /* fall through */