diff --git a/cmd/entry_backup.lua b/cmd/entry_backup.lua
index a658edd..022c0cf 100644
--- a/cmd/entry_backup.lua
+++ b/cmd/entry_backup.lua
@@ -30,7 +30,9 @@ local function cmd(args)
 					hfield.attrs[i] = v
 				end
 				hfield.children[1] = {}
-				hfield.children[1].text = field.children[1].text
+				if field.children[1] ~= nil then
+					hfield.children[1].text = field.children[1].text
+				end
 				table.insert(hfields.children,hfield)
 			end