diff --git a/src/tox.ini b/src/tox.ini
index e2d00f3ec..24d78f5b3 100644
--- a/src/tox.ini
+++ b/src/tox.ini
@@ -14,6 +14,7 @@ setenv =
     PAPERLESS_CONSUME=/tmp
     PAPERLESS_PASSPHRASE=THISISNOTASECRET
     PAPERLESS_SECRET=paperless
+    PAPERLESS_EMAIL_SECRET=paperless
 
 [testenv:pep8]
 commands=pep8