diff --git a/cornac/data/text.py b/cornac/data/text.py
index 8545206cb..75c168431 100644
--- a/cornac/data/text.py
+++ b/cornac/data/text.py
@@ -132,7 +132,7 @@ def rm_numeric(t: str) -> str:
 
 def rm_punctuation(t: str) -> str:
     """
-    Remove "!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~" from t.
+    Remove "!"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~" from t.
     """
     return t.translate(str.maketrans('', '', string.punctuation))
 
diff --git a/cornac/models/coe/coe.py b/cornac/models/coe/coe.py
index 82cc4b0f0..0d2a008f1 100644
--- a/cornac/models/coe/coe.py
+++ b/cornac/models/coe/coe.py
@@ -18,7 +18,7 @@
 import numpy as np
 import torch
 
-"""Firstly, we define a helper function to generate\sample training ordinal triplets:
+"""Firstly, we define a helper function to generate\\sample training ordinal triplets:
    Step 1:  
    given rated item i, randomly choose item j and check whether rating of j is lower than i, 
    if not randomly sample another item.