diff --git a/python-nose.spec b/python-nose.spec
index ab6fec8..9bd1c56 100644
--- a/python-nose.spec
+++ b/python-nose.spec
@@ -21,7 +21,7 @@ output capture and more.\
 
 Name:           python-%{modname}
 Version:        1.3.7
-Release:        17%{?dist}
+Release:        18%{?dist}
 BuildArch:      noarch
 
 License:        LGPLv2+ and Public Domain
@@ -76,7 +76,7 @@ BuildRequires:  python3-setuptools
 BuildRequires:  python3-coverage >= 3.4-1
 Requires:       python3-setuptools
 %{?python_provide:%python_provide python3-%{modname}}
-Obsoletes:      platform-python-%{modname} < 1.3.7-17
+Obsoletes:      platform-python-%{modname} < %{version}-%{release}
 
 %description -n python3-%{modname}
 %{desc}
@@ -170,6 +170,9 @@ popd
 %endif
 
 %changelog
+* Tue Nov 07 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.3.7-18
+- Use better Obsoletes for platform-python
+
 * Sat Nov 04 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.3.7-17
 - Remove platform-python subpackage
 - Cleanup spec