diff --git a/reactos/ntoskrnl/ob/oblife.c b/reactos/ntoskrnl/ob/oblife.c
index 74a640b7bab..99879b773e2 100644
--- a/reactos/ntoskrnl/ob/oblife.c
+++ b/reactos/ntoskrnl/ob/oblife.c
@@ -1236,6 +1236,9 @@ ObCreateObjectType(IN PUNICODE_STRING TypeName,
 
     /* Set the index and the entry into the object type array */
     LocalObjectType->Index = ObpTypeObjectType->TotalNumberOfObjects;
+
+    NT_ASSERT(LocalObjectType->Index != 0);
+
     if (LocalObjectType->Index < 32)
     {
         /* It fits, insert it */