diff --git a/frappe/utils/error.py b/frappe/utils/error.py
index 7c4d13ac1f..2c66bd85e4 100644
--- a/frappe/utils/error.py
+++ b/frappe/utils/error.py
@@ -16,6 +16,7 @@ import cgitb
 import types
 import datetime
 import json
+import six
 
 def make_error_snapshot(exception):
 	if frappe.conf.disable_error_snapshot:
@@ -49,7 +50,7 @@ def get_snapshot(exception, context=10):
 	"""
 
 	etype, evalue, etb = sys.exc_info()
-	if isinstance(etype, types.ClassType):
+	if isinstance(etype, six.class_types):
 		etype = etype.__name__
 
 	# creates a snapshot dict with some basic information