diff --git a/lib/core/common.py b/lib/core/common.py
index 61453bd53..6cf953a81 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -647,7 +647,7 @@ def dataToStdout(data, forceOutput=False):
             try:
                 # Reference: http://bugs.python.org/issue1602
                 if IS_WIN:
-                    output = data.encode('ascii', errors="replace")
+                    output = data.encode('ascii', "replace")
 
                     if output != data:
                         warnMsg = "cannot properly display Unicode characters "
diff --git a/lib/core/convert.py b/lib/core/convert.py
index 7cb1b9204..6746a1fa6 100644
--- a/lib/core/convert.py
+++ b/lib/core/convert.py
@@ -137,7 +137,7 @@ def unicodeencode(value, encoding=None):
         try:
             retVal = value.encode(encoding or UNICODE_ENCODING)
         except UnicodeEncodeError:
-            retVal = value.encode(UNICODE_ENCODING, errors="replace")
+            retVal = value.encode(UNICODE_ENCODING, "replace")
     return retVal
 
 def utf8encode(value):