diff --git a/reactos/w32api/include/ddk/win2k.h b/reactos/w32api/include/ddk/win2k.h
index ca3add0b8c9..4e36debc89d 100644
--- a/reactos/w32api/include/ddk/win2k.h
+++ b/reactos/w32api/include/ddk/win2k.h
@@ -50,6 +50,8 @@ typedef enum _BUS_DATA_TYPE {
   MaximumBusDataType
 } BUS_DATA_TYPE, *PBUS_DATA_TYPE;
 
+#pragma pack(pop)
+
 NTOSAPI
 VOID
 DDKAPI
@@ -95,8 +97,6 @@ IoWritePartitionTable(
       ((Mdl)->MappedSystemVa) : \
       (MmMapLockedPages((Mdl), KernelMode)))
 
-#pragma pack(pop)
-
 #ifdef __cplusplus
 }
 #endif