diff --git a/feature_selection/find_signature.py b/feature_selection/find_signature.py
index e60c06fd3d8..78f1893f4f6 100644
--- a/feature_selection/find_signature.py
+++ b/feature_selection/find_signature.py
@@ -10,8 +10,8 @@
 ### mini-project.
 words_file = "../text_learning/your_word_data.pkl" 
 authors_file = "../text_learning/your_email_authors.pkl"
-word_data = joblib.load( open(words_file, "r"))
-authors = joblib.load( open(authors_file, "r") )
+word_data = joblib.load( open(words_file, "rb"))
+authors = joblib.load( open(authors_file, "rb") )