diff --git a/domains/theo.json b/domains/theo.json
index 0b1b3a8ef1..3c2331815c 100644
--- a/domains/theo.json
+++ b/domains/theo.json
@@ -6,7 +6,7 @@
   },
   "records": {
     "MX": ["mx1.improvmx.com", "mx2.improvmx.com"],
-    "TXT": ["v=spf1 include:spf.improvmx.com ~all"],
+    "TXT": "v=spf1 include:spf.improvmx.com ~all",
     "CNAME": "drtheodor.github.io"
   },
   "proxied": true