diff --git a/src/pkg/html/parse.go b/src/pkg/html/parse.go
index ca3907cc02..58b754ef3d 100644
--- a/src/pkg/html/parse.go
+++ b/src/pkg/html/parse.go
@@ -1245,9 +1245,17 @@ func inSelectIM(p *parser) bool {
 	case EndTagToken:
 		switch p.tok.Data {
 		case "option":
-			// TODO.
+			if p.top().Data == "option" {
+				p.oe.pop()
+			}
 		case "optgroup":
-			// TODO.
+			i := len(p.oe) - 1
+			if p.oe[i].Data == "option" {
+				i--
+			}
+			if p.oe[i].Data == "optgroup" {
+				p.oe = p.oe[:i]
+			}
 		case "select":
 			endSelect = true
 		default:
diff --git a/src/pkg/html/parse_test.go b/src/pkg/html/parse_test.go
index 01d1facc1a..07e84907cf 100644
--- a/src/pkg/html/parse_test.go
+++ b/src/pkg/html/parse_test.go
@@ -134,7 +134,7 @@ func TestParser(t *testing.T) {
 	}{
 		// TODO(nigeltao): Process all the test cases from all the .dat files.
 		{"tests1.dat", -1},
-		{"tests2.dat", 35},
+		{"tests2.dat", 42},
 		{"tests3.dat", 0},
 	}
 	for _, tf := range testFiles {