diff --git a/pyrpl/pyrpl.py b/pyrpl/pyrpl.py
index 12b6f176..7e410ee9 100644
--- a/pyrpl/pyrpl.py
+++ b/pyrpl/pyrpl.py
@@ -166,16 +166,10 @@
 from . import user_config_dir
 from ._version import __version__
 
-# input is the wrong function in python 2
-try:
-    raw_input
-except NameError:  # Python 3
-    raw_input = input
-
-try:
-    basestring  # in python 2
-except:
-    basestring = (str, bytes)
+
+raw_input = input
+
+basestring = (str, bytes)
 
 
 default_pyrpl_config = {'name': 'default_pyrpl_instance',
diff --git a/pyrpl/widgets/spinbox.py b/pyrpl/widgets/spinbox.py
index 5f747631..18f4a991 100644
--- a/pyrpl/widgets/spinbox.py
+++ b/pyrpl/widgets/spinbox.py
@@ -4,10 +4,8 @@
 import logging
 
 import sys
-if sys.version_info < (3,):
-    integer_types = (int, long)
-else:
-    integer_types = (int,)
+
+integer_types = (int,)
 
 
 class NumberSpinBox(QtWidgets.QWidget):