diff --git a/_test/extra.txt b/_test/extra.txt
index 374d622..09c1a5d 100644
--- a/_test/extra.txt
+++ b/_test/extra.txt
@@ -703,3 +703,11 @@ This line will be displayed.
 //- - - - - - - - -//
 <p>\\\ufffd&quot;</p>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
+
+
+55: inline HTML comment
+//- - - - - - - - -//
+a <!-- b --> c
+//- - - - - - - - -//
+<p>a <!-- b --> c</p>
+//= = = = = = = = = = = = = = = = = = = = = = = =//
diff --git a/parser/raw_html.go b/parser/raw_html.go
index afd6f58..133c906 100644
--- a/parser/raw_html.go
+++ b/parser/raw_html.go
@@ -81,9 +81,12 @@ func (s *rawHTMLParser) parseComment(block text.Reader, pc Context) ast.Node {
 	line = line[offset:]
 	for {
 		hindex := bytes.Index(line, doubleHyphen)
+		if hindex > -1 {
+			hindex += offset
+		}
 		index := bytes.Index(line, closeComment) + offset
 		if index > -1 && hindex == index {
-			if index == 0 || line[index-1] != '-' {
+			if index == 0 || len(line) < 2 || line[index-1] != '-' {
 				node.Segments.Append(segment.WithStop(segment.Start + index + len(closeComment)))
 				block.Advance(index + len(closeComment))
 				return node