diff --git a/ikiwiki.spec b/ikiwiki.spec
index 94852ae..ce33059 100644
--- a/ikiwiki.spec
+++ b/ikiwiki.spec
@@ -38,7 +38,7 @@ Requires:       perl(CGI::FormBuilder)
 Requires:       perl(CGI::Session)
 Requires:       perl(Digest::SHA1)
 
-Requires:       python(abi)%{?python_version: = %{python_version}}
+Requires:       python(abi) %(%{__python} -c "import sys ; print \"=\", sys.version[:3]")
 Requires:       python-docutils
 
 %global cgi_bin %{_libexecdir}/w3m/cgi-bin