diff --git a/modules/cloud-function-v2/main.tf b/modules/cloud-function-v2/main.tf
index a0dc593f..23699fc4 100644
--- a/modules/cloud-function-v2/main.tf
+++ b/modules/cloud-function-v2/main.tf
@@ -45,7 +45,7 @@ locals {
   trigger_service_account_email = (
     try(var.trigger_config.service_account_create, false)
     ? google_service_account.trigger_service_account[0].email
-    : null
+    : try(var.trigger_config.service_account_email, null)
   )
   vpc_connector = (
     var.vpc_connector == null
@@ -104,7 +104,7 @@ resource "google_cloudfunctions2_function" "function" {
           operator  = event_filter.value.operator
         }
       }
-      service_account_email = var.trigger_config.service_account_email
+      service_account_email = local.trigger_service_account_email
       retry_policy          = var.trigger_config.retry_policy
     }
   }