diff --git a/README.markdown b/README.markdown
index 0c73d59..892dc76 100644
--- a/README.markdown
+++ b/README.markdown
@@ -67,7 +67,7 @@ $ sudo easy_install cchardet
 ```python
 # -*- coding: utf-8 -*-
 import cchardet as chardet
-with open(r"test/testdata/wikipediaJa_One_Thousand_and_One_Nights_SJIS.txt") as f:
+with open(r"test/testdata/wikipediaJa_One_Thousand_and_One_Nights_SJIS.txt", "rb") as f:
     msg = f.read()
 result = chardet.detect(msg)
 print(result)
@@ -103,7 +103,7 @@ Platform: Kubuntu 12.04 amd64, Python 2.7.3 64-bit
     <td>chardet</td><td>0.32</td>
   </tr>
   <tr>
-    <td>cchardet</td><td>1012.97</td>
+    <td>cchardet</td><td>975.46</td>
   </tr>
 </table>
 
diff --git a/README.rst b/README.rst
index 8fc3fd8..3b5ecb7 100644
--- a/README.rst
+++ b/README.rst
@@ -76,7 +76,7 @@ Example
 
     # -*- coding: utf-8 -*-
     import cchardet as chardet
-    with open(r"test/testdata/wikipediaJa_One_Thousand_and_One_Nights_SJIS.txt") as f:
+    with open(r"test/testdata/wikipediaJa_One_Thousand_and_One_Nights_SJIS.txt", "rb") as f:
         msg = f.read()
     result = chardet.detect(msg)
     print(result)
@@ -115,7 +115,7 @@ Result:
 
 	chardet:	0.32 (call/s)
 
-	cchardet:	1012.97 (call/s)
+	cchardet:	975.32 (call/s)
 
 License
 --------------