diff --git a/tox.ini b/tox.ini
index b0f9c9f6d..59b97d908 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,8 +7,8 @@ skipsdist = True
 usedevelop = True
 whitelist_externals = find
 install_command =
-                  constraints: pip install -U --force-reinstall -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
-                  pip install -U {opts} {packages}
+                   pip install -U --force-reinstall -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+
 setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt