diff --git a/html.go b/html.go
index a685ae5..cf176cc 100644
--- a/html.go
+++ b/html.go
@@ -664,7 +664,7 @@ func isHtmlTag(tag []byte, tagname string) bool {
 			break
 		}
 
-		if tag[i] != tagname[j] {
+		if strings.ToLower(string(tag[i]))[0] != tagname[j] {
 			return false
 		}
 	}
diff --git a/inline_test.go b/inline_test.go
index fbc0eaa..0403339 100644
--- a/inline_test.go
+++ b/inline_test.go
@@ -67,6 +67,9 @@ func TestRawHtmlTag(t *testing.T) {
 	tests := []string{
 		"zz <style>p {}</style>\n",
 		"<p>zz p {}</p>\n",
+
+		"zz <STYLE>p {}</STYLE>\n",
+		"<p>zz p {}</p>\n",
 	}
 	doTestsInlineParam(t, tests, 0, HTML_SKIP_STYLE)
 }