diff --git a/sfdx-source/apex-common/test/classes/fflib_SObjectUnitOfWorkTest.cls b/sfdx-source/apex-common/test/classes/fflib_SObjectUnitOfWorkTest.cls
index 2eb8775630..e4f8ab2c05 100644
--- a/sfdx-source/apex-common/test/classes/fflib_SObjectUnitOfWorkTest.cls
+++ b/sfdx-source/apex-common/test/classes/fflib_SObjectUnitOfWorkTest.cls
@@ -882,7 +882,10 @@ private with sharing class fflib_SObjectUnitOfWorkTest
         public void dmlInsert(List<SObject> objList)
         {
             for (SObject obj : objList) {
-                obj.Id = fflib_IDGenerator.generate(obj?.getSObjectType());
+                if (obj == null) {
+                    continue;
+                }
+                obj.Id = fflib_IDGenerator.generate(obj.getSObjectType());
             }
             this.recordsForInsert.addAll(objList);
         }