diff --git a/awx_collection/plugins/lookup/schedule_rruleset.py b/awx_collection/plugins/lookup/schedule_rruleset.py
index b45d861db3..07e990800b 100644
--- a/awx_collection/plugins/lookup/schedule_rruleset.py
+++ b/awx_collection/plugins/lookup/schedule_rruleset.py
@@ -214,7 +214,7 @@ class LookupModule(LookupBase):
         if not isinstance(rule[field_name], list):
             rule[field_name] = rule[field_name].split(',')
         for value in rule[field_name]:
-            value = value.strip()
+            value = value.strip().lower()
             if value not in valid_list:
                 raise AnsibleError('In rule {0} {1} must only contain values in {2}'.format(rule_number, field_name, ', '.join(valid_list.keys())))
             return_values.append(valid_list[value])
diff --git a/awx_collection/tests/integration/targets/lookup_rruleset/tasks/main.yml b/awx_collection/tests/integration/targets/lookup_rruleset/tasks/main.yml
index 7f9f0271b2..6ff771749e 100644
--- a/awx_collection/tests/integration/targets/lookup_rruleset/tasks/main.yml
+++ b/awx_collection/tests/integration/targets/lookup_rruleset/tasks/main.yml
@@ -356,3 +356,19 @@
     that:
       - results is success
       - "'DTSTART;TZID=UTC:20220430T103045 RRULE:FREQ=MONTHLY;BYMONTHDAY=12,13,14,15,16,17,18;BYDAY=SA;INTERVAL=1' == complex_rule"
+
+- name: mondays, Tuesdays, and WEDNESDAY with case-insensitivity
+  set_fact:
+    complex_rule: "{{ query(ruleset_plugin_name, '2022-04-30 10:30:45', rules=rrules, timezone='UTC' ) }}"
+  ignore_errors: True
+  register: results
+  vars:
+    rrules:
+      - frequency: 'day'
+        interval: 1
+        byweekday: monday, Tuesday, WEDNESDAY
+
+- assert:
+    that:
+      - results is success
+      - "'DTSTART;TZID=UTC:20220430T103045 RRULE:FREQ=DAILY;BYDAY=MO,TU,WE;INTERVAL=1' == complex_rule"