diff --git a/decrypt.go b/decrypt.go
index ac1ebf0..76d5afd 100644
--- a/decrypt.go
+++ b/decrypt.go
@@ -48,7 +48,7 @@ func Decrypt(privateKey []byte, doc []byte) ([]byte, error) {
 		return nil, popError()
 	}
 
-	parsedDoc, err := newDoc(doc)
+	parsedDoc, err := newDoc(doc, nil)
 	if err != nil {
 		return nil, err
 	}
diff --git a/encrypt.go b/encrypt.go
index 438d49f..bf73c81 100644
--- a/encrypt.go
+++ b/encrypt.go
@@ -139,7 +139,7 @@ func Encrypt(publicKey, doc []byte, opts EncryptOptions) ([]byte, error) {
 		return nil, mustPopError()
 	}
 
-	parsedDoc, err := newDoc(doc)
+	parsedDoc, err := newDoc(doc, nil)
 	if err != nil {
 		return nil, err
 	}
diff --git a/encrypt_test.go b/encrypt_test.go
index f5502f8..a816438 100644
--- a/encrypt_test.go
+++ b/encrypt_test.go
@@ -88,7 +88,7 @@ func (testSuite *EncryptTest) TestEncrypt(c *C) {
 	actualPlaintext, err := Decrypt(testSuite.Key, encryptedString)
 	c.Assert(err, IsNil)
 
-	plaintextDoc, _ := newDoc(testSuite.Plaintext)
+	plaintextDoc, _ := newDoc(testSuite.Plaintext, nil)
 	expectedPlaintext := dumpDoc(plaintextDoc)
 
 	// Big blobs of XML are hard to debug. They are easier to handle when
diff --git a/xmldsig.go b/xmldsig.go
index 3fbb012..d593e27 100644
--- a/xmldsig.go
+++ b/xmldsig.go
@@ -58,7 +58,7 @@ func Sign(key []byte, doc []byte, opts SignatureOptions) ([]byte, error) {
 		return nil, errors.New("failed to load pem key")
 	}
 
-	parsedDoc, err := newDoc2(doc, opts)
+	parsedDoc, err := newDoc(doc, opts.XMLID)
 	if err != nil {
 		return nil, err
 	}
@@ -134,7 +134,7 @@ func Verify(publicKey []byte, doc []byte, opts SignatureOptions) error {
 	}
 	defer C.xmlSecDSigCtxDestroy(dsigCtx)
 
-	parsedDoc, err := newDoc2(doc, opts)
+	parsedDoc, err := newDoc(doc, opts.XMLID)
 	if err != nil {
 		return err
 	}
diff --git a/xmlsec.go b/xmlsec.go
index 2257dc5..3d73f57 100644
--- a/xmlsec.go
+++ b/xmlsec.go
@@ -49,7 +49,7 @@ func init() {
 	C.xmlSecErrorsSetCallback((C.xmlSecErrorsCallback)(unsafe.Pointer(C.onError_cgo)))
 }
 
-func newDoc(buf []byte) (*C.xmlDoc, error) {
+func newDoc(buf []byte, idattrs []XMLIDOption) (*C.xmlDoc, error) {
 	ctx := C.xmlCreateMemoryParserCtxt((*C.char)(unsafe.Pointer(&buf[0])),
 		C.int(len(buf)))
 	if ctx == nil {
@@ -68,29 +68,7 @@ func newDoc(buf []byte) (*C.xmlDoc, error) {
 		return nil, errors.New("parse failed")
 	}
 
-	return doc, nil
-}
-
-func newDoc2(buf []byte, opts SignatureOptions) (*C.xmlDoc, error) {
-	ctx := C.xmlCreateMemoryParserCtxt((*C.char)(unsafe.Pointer(&buf[0])),
-		C.int(len(buf)))
-	if ctx == nil {
-		return nil, errors.New("error creating parser")
-	}
-	defer C.xmlFreeParserCtxt(ctx)
-
-	C.xmlParseDocument(ctx)
-
-	if ctx.wellFormed == C.int(0) {
-		return nil, errors.New("malformed XML")
-	}
-
-	doc := ctx.myDoc
-	if doc == nil {
-		return nil, errors.New("parse failed")
-	}
-
-	for _, idattr := range opts.XMLID {
+	for _, idattr := range idattrs {
 		addIDAttr(C.xmlDocGetRootElement(doc),
 			idattr.AttributeName, idattr.ElementName, idattr.ElementNamespace)
 	}