diff --git a/setup.py b/setup.py
index 2bdd7e2244..41e9e8385d 100644
--- a/setup.py
+++ b/setup.py
@@ -56,7 +56,6 @@ requires.append(get_require_version('trytond'))
 tests_require = []
 dependency_links = []
 if minor_version % 2:
-    # Add development index for testing with proteus
     dependency_links.append('https://trydevpi.tryton.org/')
 
 setup(name=name,
diff --git a/tox.ini b/tox.ini
index 527d85998d..3d844eaead 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,4 +15,4 @@ setenv =
     sqlite: DB_NAME={env:SQLITE_NAME::memory:}
     postgresql: DB_NAME={env:POSTGRESQL_NAME:test}
     mysql: DB_NAME={env:MYSQL_NAME:test}
-install_command = pip install --pre --find-links https://trydevpi.tryton.org/ {opts} {packages}
+install_command = pip install --pre --process-dependency-links {opts} {packages}