diff --git a/python-oslo-i18n.spec b/python-oslo-i18n.spec
index 1dba8d0..eb86c56 100644
--- a/python-oslo-i18n.spec
+++ b/python-oslo-i18n.spec
@@ -61,6 +61,7 @@ Documentation for the oslo.i18n library.
 %endif
 
 %package  -n python-%{pkg_name}-lang
+BuildRequires:  python3-babel
 Summary:   Translation files for Oslo i18n library
 
 %description -n python-%{pkg_name}-lang
@@ -107,15 +108,15 @@ done
 # remove the sphinx-build-3 leftovers
 rm -rf doc/build/html/.{doctrees,buildinfo}
 
-# Generate i18n files
-python3 setup.py compile_catalog -d %{buildroot}%{python3_sitelib}/oslo_i18n/locale --domain oslo_i18n
-
 # Fix this rpmlint warning
 if [ -f html/_static/jquery.js ]; then
 sed -i "s|\r||g" html/_static/jquery.js
 fi
 %endif
 
+# Generate i18n files
+python3 setup.py compile_catalog -d %{buildroot}%{python3_sitelib}/oslo_i18n/locale --domain oslo_i18n
+
 # Install i18n .mo files (.po and .pot are not required)
 install -d -m 755 %{buildroot}%{_datadir}
 rm -f %{buildroot}%{python3_sitelib}/oslo_i18n/locale/*/LC_*/oslo_i18n*po