diff --git a/kmod/src/dlmglue.h b/kmod/src/dlmglue.h
index 0a73a7eb..f96a879d 100644
--- a/kmod/src/dlmglue.h
+++ b/kmod/src/dlmglue.h
@@ -29,6 +29,7 @@
 
 /* Max length of lockid name */
 #define OCFS2_LOCK_ID_MAX_LEN  32
+#define DLM_LVB_LEN  64
 
 enum ocfs2_ast_action {
 	OCFS2_AST_INVALID = 0,