diff --git a/terraform/variables.tf b/terraform/variables.tf
index 00cd00b..790d223 100644
--- a/terraform/variables.tf
+++ b/terraform/variables.tf
@@ -46,8 +46,8 @@ variable "repositories" {
     members = optional(set(string), []) # Members of the repository team. Have triage permissions
 
     # The following are valid combinations for the merge commit title and message: PR_TITLE and PR_BODY, PR_TITLE and BLANK, MERGE_MESAGE and PR_TITLE. (invalid_merge_commit_setting_combo)}]
-    merge_commit_title          = optional(string, "PR_TITLE")
-    merge_commit_message        = optional(string, "PR_BODY")
+    merge_commit_title          = optional(string, "MERGE_MESSAGE")
+    merge_commit_message        = optional(string, "PR_TITLE")
     squash_merge_commit_title   = optional(string, "PR_TITLE")
     squash_merge_commit_message = optional(string, "PR_BODY")
   }))