diff --git a/src/nt.h b/src/nt.h
index ffdbcb8..62cd98b 100644
--- a/src/nt.h
+++ b/src/nt.h
@@ -26,10 +26,7 @@ typedef NTSTATUS* PNTSTATUS;
 #endif
 
 typedef struct _IO_STATUS_BLOCK {
-  union {
-    NTSTATUS Status;
-    PVOID Pointer;
-  };
+  NTSTATUS Status;
   ULONG_PTR Information;
 } IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;