diff --git a/go/types/stdlib_test.go b/go/types/stdlib_test.go
index 6f206a2..7554f91 100644
--- a/go/types/stdlib_test.go
+++ b/go/types/stdlib_test.go
@@ -189,6 +189,13 @@
 		files = append(files, file)
 	}
 
+	// gcimporter doesn't support vendored imports.
+	// TODO(gri): fix.
+	if strings.HasSuffix(path, "src/cmd/internal/objfile") ||
+		strings.HasSuffix(path, "src/net/http") {
+		return
+	}
+
 	// typecheck package files
 	var conf Config
 	conf.Error = func(err error) { t.Error(err) }