diff --git a/contrib/core/actions/inject_trigger.py b/contrib/core/actions/inject_trigger.py
index a6b2e68317..5e41bf2692 100644
--- a/contrib/core/actions/inject_trigger.py
+++ b/contrib/core/actions/inject_trigger.py
@@ -21,7 +21,7 @@
 
 
 class InjectTriggerAction(Action):
-    def run(self, trigger, payload=None, trace_tag=None):
+    def run(self, trigger=None, trigger_name=None, payload=None, trace_tag=None):
         payload = payload or {}
 
         datastore_service = self.action_service.datastore_service
@@ -32,6 +32,16 @@ def run(self, trigger, payload=None, trace_tag=None):
         # results in a TriggerInstanceDB database object creation or not. The object is created
         # inside rulesengine service and could fail due to the user providing an invalid trigger
         # reference or similar.
+
+        # Raise an error if both trigger and trigger_name are specified
+        if trigger and trigger_name:
+            raise ValueError('Parameters `trigger` and `trigger_name` are mutually exclusive.')
+
+        # Raise an error if neither trigger nor trigger_name are specified
+        if not trigger and not trigger_name:
+            raise ValueError('You must include either the `trigger_name` or `trigger` parameter.')
+
+        trigger = trigger if trigger else trigger_name
         self.logger.debug(
             'Injecting trigger "%s" with payload="%s"' % (trigger, str(payload))
         )
diff --git a/contrib/core/actions/inject_trigger.yaml b/contrib/core/actions/inject_trigger.yaml
index bfc98dc71c..b8e3de89fa 100644
--- a/contrib/core/actions/inject_trigger.yaml
+++ b/contrib/core/actions/inject_trigger.yaml
@@ -6,9 +6,15 @@ enabled: true
 entry_point: inject_trigger.py
 parameters:
   trigger:
+    type: string
+    description: |
+      Trigger reference (e.g. mypack.my_trigger).
+      This parameter is superceded by `trigger_name` but left for backwards compatibility.
+    required: false
+  trigger_name:
     type: string
     description: Trigger reference (e.g. mypack.my_trigger).
-    required: true
+    required: false
   payload:
     type: object
     description: Trigger payload.