diff --git a/defaults/main.yml b/defaults/main.yml
index 1a5e8e8..33fb7c3 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -15,7 +15,7 @@ docker_apt_release_channel: stable
 docker_apt_arch: amd64
 docker_apt_repository: "deb [arch={{ docker_apt_arch }}] https://download.docker.com/linux/{{ ansible_distribution|lower }} {{ ansible_distribution_release }} {{ docker_apt_release_channel }}"
 docker_apt_ignore_key_error: True
-docker_apt_source_list_filename: apt_dockerproject_org_repo.list
+docker_apt_source_list_filename: apt_dockerproject_org_repo
 # Used only for RedHat/CentOS/Fedora.
 docker_yum_repo_url: https://download.docker.com/linux/{{ (ansible_distribution == "Fedora") | ternary("fedora","centos") }}/docker-{{ docker_edition }}.repo
 docker_yum_repo_enable_edge: 0