diff --git a/trytond.spec b/trytond.spec
index 8c63e47..63149c0 100644
--- a/trytond.spec
+++ b/trytond.spec
@@ -48,13 +48,10 @@ BuildRequires:  python3-setuptools
 BuildRequires:  python3-simplejson
 BuildRequires:  python3-wrapt
 BuildRequires:  systemd-rpm-macros
-Requires:       postgresql96-server
+Requires:       postgresql96-server < 10
 Requires:       python3-Genshi
 Requires:       python3-lxml
 Requires:       python3-psycopg2
-#Requires:	python3-pytz
-#Requires:	python3-pyOpenSSL
-#Requires:	python3-egenix-mx-base
 Requires:       libreoffice-pyuno
 Requires:       python3-Levenshtein
 Requires:       python3-dateutil
@@ -62,7 +59,6 @@ Requires:       python3-polib
 Requires:       python3-python-sql
 Requires:       python3-relatorio
 Requires:       unoconv
-#Requires:	python3-PyWebDAV
 Requires:       python3-Sphinx
 Requires:       python3-Werkzeug
 Requires:       python3-bcrypt
@@ -73,6 +69,7 @@ Requires(pre): 	/usr/sbin/groupadd
 Requires(pre): 	/usr/sbin/useradd
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:      noarch
+
 %{?systemd_requires}
 
 %description