diff --git a/defaults/main.yml b/defaults/main.yml
index 423cb16..2ebeb50 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,4 +1,4 @@
 ---
 postgres_repository_enabled: False
 postgres_version: 10
-postgres_repository_filename: "Postgresql-{{ postgres_version | regex_replace('\.') }}"
+postgres_repository_filename: "Postgresql-{{ postgres_version | regex_replace('\\.') }}"