diff --git a/guidance/DS137138.md b/guidance/DS137138.md
index 0b4fdd37..a5e32b5c 100644
--- a/guidance/DS137138.md
+++ b/guidance/DS137138.md
@@ -2,7 +2,7 @@
 
 ### Summary
 
-An HTTP-based URL without TLS was detected. If possible, change this to an HTTP-based URL to enforce transport-layer encryption.
+An HTTP-based URL without TLS was detected. If possible, change this to an HTTPS-based URL to enforce transport-layer encryption.
 
 ### Details