diff --git a/xtoskrnl/includes/mm/tags.hh b/xtoskrnl/includes/mm/tags.hh
index 8a176c4ae..937784b42 100644
--- a/xtoskrnl/includes/mm/tags.hh
+++ b/xtoskrnl/includes/mm/tags.hh
@@ -23,6 +23,7 @@
 #define TAG_OB_DIRECTORY                                        SIGNATURE32('O', 'B', 'D', 'I')
 #define TAG_OB_MEMORY_POOL                                      SIGNATURE32('O', 'B', 'J', 'M')
 #define TAG_OB_NAME                                             SIGNATURE32('O', 'B', 'N', 'M')
+#define TAG_OB_OBJECT_TABLE                                     SIGNATURE32('O', 'B', 'T', 'B')
 #define TAG_OB_OBJECT_TYPE                                      SIGNATURE32('O', 'B', 'J', 'T')
 #define TAG_PS_QUOTA_BLOCK                                      SIGNATURE32('P', 'S', 'Q', 'B')
 #define TAG_SE_DESCRIPTOR                                       SIGNATURE32('S', 'E', 'S', 'D')