diff --git a/domains/seen.json b/domains/seen.json
index c96cbf71f..42dc46876 100644
--- a/domains/seen.json
+++ b/domains/seen.json
@@ -11,6 +11,6 @@
                     "mx1.improvmx.com",
                     "mx2.improvmx.com"
             ],
-            "TXT": ["v=spf1 include:spf.improvmx.com ~all"]
+            "TXT": "v=spf1 include:spf.improvmx.com ~all"
         }
     }