diff --git a/tasks/prereqs.yml b/tasks/prereqs.yml
index ed59a9d..dc3ab17 100644
--- a/tasks/prereqs.yml
+++ b/tasks/prereqs.yml
@@ -27,7 +27,7 @@
   yum:
     name: zsh
     state: present
-  when: ansible_distribution == "Ubuntu"
+  when: ansible_distribution == "CentOS"
 
 - name: Create an admin group for password-less sudo options
   group:
diff --git a/tests/smoke/repo-role/no-user-management/prereqs_test.rb b/tests/smoke/repo-role/no-user-management/prereqs_test.rb
index c1b42cb..1a672c4 100644
--- a/tests/smoke/repo-role/no-user-management/prereqs_test.rb
+++ b/tests/smoke/repo-role/no-user-management/prereqs_test.rb
@@ -13,6 +13,11 @@
 
 if ['ubuntu', 'centos'].include?(os[:name])
 
+  # Verify zsh is installed
+  describe package('zsh') do
+    it { should be_installed }
+  end
+
   # Verify the sysadmins group exists
   describe group('sysadmins') do
     it { should exist }
diff --git a/tests/smoke/repo-role/standard/prereqs_test.rb b/tests/smoke/repo-role/standard/prereqs_test.rb
index f15da68..b5aa1e6 100644
--- a/tests/smoke/repo-role/standard/prereqs_test.rb
+++ b/tests/smoke/repo-role/standard/prereqs_test.rb
@@ -13,6 +13,11 @@
 
 if ['ubuntu', 'centos'].include?(os[:name])
 
+  # Verify zsh is installed
+  describe package('zsh') do
+    it { should be_installed }
+  end
+
   # Verify the sysadmins group exists
   describe group('sysadmins') do
     it { should exist }