diff --git a/python-tornado.changes b/python-tornado.changes
index 7d7d9aa..166e2c3 100644
--- a/python-tornado.changes
+++ b/python-tornado.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Jan  4 15:56:26 UTC 2018 - jmatejek@suse.com
+
+- only buildrequire futures / singledispatch if python2 is present
+  (fixes build in environments that don't have python2 at all)
+
 -------------------------------------------------------------------
 Wed Dec  6 13:59:31 UTC 2017 - tchvatal@suse.com
 
diff --git a/python-tornado.spec b/python-tornado.spec
index 8b6bace..110fd61 100644
--- a/python-tornado.spec
+++ b/python-tornado.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-tornado
 #
-# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,6 +16,7 @@
 #
 
 
+%bcond_without python2
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           python-tornado
 Version:        4.5.2
@@ -31,7 +32,6 @@ BuildRequires:  %{python_module pycurl}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  %{python_module simplejson}
 BuildRequires:  fdupes
-BuildRequires:  python-futures
 BuildRequires:  python-rpm-macros
 Requires:       python >= 2.7.9
 Requires:       python-simplejson
@@ -43,9 +43,12 @@ Recommends:     python-service_identity
 BuildRequires:  %{python_module backports.ssl_match_hostname}
 BuildRequires:  %{python_module certifi}
 %endif
+%if %{with python2}
+BuildRequires:  python-futures
+BuildRequires:  python-singledispatch
+%endif
 # SECTION test requirements
 BuildRequires:  %{python_module backports_abc}
-BuildRequires:  python-singledispatch
 # /SECTION
 %if %{python_version_nodots} < 35
 Requires:       python-backports_abc