diff --git a/pdfminer/pdfdocument.py b/pdfminer/pdfdocument.py
index 4754926..c170f1a 100644
--- a/pdfminer/pdfdocument.py
+++ b/pdfminer/pdfdocument.py
@@ -219,7 +219,7 @@ class PDFXRefStream(PDFBaseXRef):
         if not isinstance(stream, PDFStream) or stream['Type'] is not LITERAL_XREF:
             raise PDFNoValidXRef('Invalid PDF stream spec.')
         size = stream['Size']
-        index_array = stream.get('Index', (0, size))
+        index_array = stream.get('Index', (1, size))
         if len(index_array) % 2 != 0:
             raise PDFSyntaxError('Invalid index number')
         self.ranges.extend(choplist(2, index_array))
diff --git a/tools/dumppdf.py b/tools/dumppdf.py
index 1b1acf7..7826240 100755
--- a/tools/dumppdf.py
+++ b/tools/dumppdf.py
@@ -114,8 +114,7 @@ def dumpoutline(outfp, fname, objids, pagenos, password='',
                 dumpall=False, codec=None, extractdir=None):
     fp = file(fname, 'rb')
     parser = PDFParser(fp)
-    doc = PDFDocument(parser)
-    doc.initialize(password)
+    doc = PDFDocument(parser, password)
     pages = dict( (page.pageid, pageno) for (pageno,page)
                   in enumerate(PDFPage.create_pages(doc)) )
     def resolve_dest(dest):
@@ -185,9 +184,7 @@ def extractembedded(outfp, fname, objids, pagenos, password='',
 
     fp = file(fname, 'rb')
     parser = PDFParser(fp)
-    doc = PDFDocument(parser)
-    doc.initialize(password)
-
+    doc = PDFDocument(parser, password)
     for xref in doc.xrefs:
         for objid in xref.get_objids():
             obj = doc.getobj(objid)
@@ -200,8 +197,7 @@ def dumppdf(outfp, fname, objids, pagenos, password='',
             dumpall=False, codec=None, extractdir=None):
     fp = file(fname, 'rb')
     parser = PDFParser(fp)
-    doc = PDFDocument(parser)
-    doc.initialize(password)
+    doc = PDFDocument(parser, password)
     if objids:
         for objid in objids:
             obj = doc.getobj(objid)