diff --git a/tox.ini b/tox.ini
index 420a5db5ca..62c81e70a9 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,9 +12,6 @@ setenv = VIRTUAL_ENV={envdir}
          NOSE_OPENSTACK_RED=0.05
          NOSE_OPENSTACK_YELLOW=0.025
          NOSE_OPENSTACK_SHOW_ELAPSED=1
-# Note the hash seed is set to 0 until horizon can be tested with a
-# random hash seed successfully.
-         PYTHONHASHSEED=0
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 whitelist_externals = /bin/bash