diff --git a/reactos/include/psdk/winnt.h b/reactos/include/psdk/winnt.h
index 36fe07b1a4e..859acc5f212 100644
--- a/reactos/include/psdk/winnt.h
+++ b/reactos/include/psdk/winnt.h
@@ -4187,16 +4187,16 @@ typedef struct _IMAGE_RESOURCE_DIRECTORY_ENTRY {
     _ANONYMOUS_STRUCT struct {
       DWORD NameOffset:31;
       DWORD NameIsString:1;
-    } DUMMYSTRUCTNAME;
+    } DUMMYSTRUCTNAME1;
     DWORD Name;
     WORD Id;
-  } DUMMYUNIONNAME;
+  } DUMMYUNIONNAME1;
   _ANONYMOUS_UNION union {
     DWORD OffsetToData;
     _ANONYMOUS_STRUCT struct {
       DWORD OffsetToDirectory:31;
       DWORD DataIsDirectory:1;
-    } DUMMYSTRUCTNAME;
+    } DUMMYSTRUCTNAME3;
   } DUMMYUNIONNAME2;
 } IMAGE_RESOURCE_DIRECTORY_ENTRY, *PIMAGE_RESOURCE_DIRECTORY_ENTRY;