diff --git a/tox.ini b/tox.ini
index 301d453d041..571b571407d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,6 +47,7 @@ downloadcache = ~/cache/pip
 
 [testenv:pep8]
 commands =
+  sh -c "if [ $(find . -type l ! -path '*.tox*' | wc -l) -ge 1 ]; then echo 'Symlinks are not allowed!' && exit 1; fi"
   sh ./tools/check_bash.sh
   flake8
   neutron-db-manage check_migration