diff --git a/core/test/src/org/labkey/test/tests/upgrade/EncryptionKeyUpgradeTest.java b/core/test/src/org/labkey/test/tests/upgrade/EncryptionKeyUpgradeTest.java
index 5cb76239519..e5f985791fc 100644
--- a/core/test/src/org/labkey/test/tests/upgrade/EncryptionKeyUpgradeTest.java
+++ b/core/test/src/org/labkey/test/tests/upgrade/EncryptionKeyUpgradeTest.java
@@ -73,7 +73,7 @@ public void testStatusCakeApiKey()
         {
             // Just loading this page can trigger an error if there was a problem with the encryption
             assertEquals("StatusCake API key input should be present but blank",
-                    "", EditUpgradeMessagePage.beginAt(this).getStatusCakeApiKey());
+                    "", EditUpgradeMessagePage.beginAt(this, null).getStatusCakeApiKey()); // Use the root container in case the '_mothership' project doesn't exist
         }
     }