diff --git a/library/centos/roles/external-repos/tasks/main.yml b/library/centos/roles/external-repos/tasks/main.yml
index 79a7cf47..e8b5e94b 100644
--- a/library/centos/roles/external-repos/tasks/main.yml
+++ b/library/centos/roles/external-repos/tasks/main.yml
@@ -1,15 +1,15 @@
 ---
 - name: Install the epel repository
   yum: name={{ centos_epel_repo_url }} state={{ centos_pkg_state }}
-  when: centos_install_epel
+  when: centos_install_epel | bool
   tags: [ 'centos', 'repo' ]
 
 - name: Install the SCL release to access the latest versions of some software
   yum: name=centos-release-scl state=present
-  when: centos_install_release_scl
+  when: centos_install_release_scl | bool
   tags: [ 'centos', 'scl', 'repo' ]
 
 - name: Install the elrepo repository
   yum: name={{ rh_elrepo_repo_url }} state=present
-  when: rh_install_elrepo
+  when: rh_install_elrepo | bool
   tags: [ 'centos', 'rhel', 'repo' ]