diff --git a/tests/azure/templates/variables_c8s.yaml b/tests/azure/templates/variables_c8s.yaml
index 586d5ecb2404924285a9f19ed2082bcf35be0a38..8fdc2819b6e9f1f26c91549f52682e23b2a0c184 100644
--- a/tests/azure/templates/variables_c8s.yaml
+++ b/tests/azure/templates/variables_c8s.yaml
@@ -5,11 +5,13 @@
 #
 # Example:
 #
-# disabled_modules: >-
+# ipa_disabled_modules: >-
 #   dnsconfig,
 #   group,
 #   hostgroup
 #
+# If no variables are set, set "empty: true" as at least
+# one item is needed in the set.
 ---
 variables:
   empty: true
diff --git a/tests/azure/templates/variables_c9s.yaml b/tests/azure/templates/variables_c9s.yaml
index 586d5ecb2404924285a9f19ed2082bcf35be0a38..8fdc2819b6e9f1f26c91549f52682e23b2a0c184 100644
--- a/tests/azure/templates/variables_c9s.yaml
+++ b/tests/azure/templates/variables_c9s.yaml
@@ -5,11 +5,13 @@
 #
 # Example:
 #
-# disabled_modules: >-
+# ipa_disabled_modules: >-
 #   dnsconfig,
 #   group,
 #   hostgroup
 #
+# If no variables are set, set "empty: true" as at least
+# one item is needed in the set.
 ---
 variables:
   empty: true
diff --git a/tests/azure/templates/variables_centos-7.yaml b/tests/azure/templates/variables_centos-7.yaml
index 8628af2eab5e59ae9941572e090a65c89cb58a70..4d29c2def4b1a599af2ba6bc0804727293b4c385 100644
--- a/tests/azure/templates/variables_centos-7.yaml
+++ b/tests/azure/templates/variables_centos-7.yaml
@@ -5,11 +5,13 @@
 #
 # Example:
 #
-# disabled_modules: >-
+# ipa_disabled_modules: >-
 #   dnsconfig,
 #   group,
 #   hostgroup
 #
+# If no variables are set, set "empty: true" as at least
+# one item is needed in the set.
 ---
 variables:
   # ipa_enabled_modules: >-
diff --git a/tests/azure/templates/variables_fedora-latest.yaml b/tests/azure/templates/variables_fedora-latest.yaml
index 04fb6d291c24b356eca5c376e08dff27f934883a..5f5de3171290aa0c72edbec51cdd760cb6e3ab26 100644
--- a/tests/azure/templates/variables_fedora-latest.yaml
+++ b/tests/azure/templates/variables_fedora-latest.yaml
@@ -1,15 +1,18 @@
 #
+#
 # Variables must be defined as comma separated lists.
 # For easier management of items to enable/disable,
 # use one test/module on each line, followed by a comma.
 #
 # Example:
 #
-# disabled_modules: >-
+# ipa_disabled_modules: >-
 #   dnsconfig,
 #   group,
 #   hostgroup
 #
+# If no variables are set, set "empty: true" as at least
+# one item is needed in the set.
 ---
 variables:
   # ipa_enabled_modules: >-
diff --git a/tests/azure/templates/variables_fedora-rawhide.yaml b/tests/azure/templates/variables_fedora-rawhide.yaml
index d412651bc9d1027a178bf05f22b7962620d44ee2..a19c2e9ab442ec67ece5413ef47083270e7c3c7d 100644
--- a/tests/azure/templates/variables_fedora-rawhide.yaml
+++ b/tests/azure/templates/variables_fedora-rawhide.yaml
@@ -5,11 +5,13 @@
 #
 # Example:
 #
-# disabled_modules: >-
+# ipa_disabled_modules: >-
 #   dnsconfig,
 #   group,
 #   hostgroup
 #
+# If no variables are set, set "empty: true" as at least
+# one item is needed in the set.
 ---
 variables:
   empty: true