diff --git a/inputters/lua.lua b/inputters/lua.lua
index cc6713597..4e5bfa165 100644
--- a/inputters/lua.lua
+++ b/inputters/lua.lua
@@ -19,7 +19,7 @@ function inputter.appropriate (round, filename, doc)
 end
 
 function inputter.parse (_, doc)
-   local result, err = load(doc)
+   local result, err = load(doc, SILE.currentlyProcessingFile)
    if not result then
       SU.error(err)
    end
diff --git a/packages/tableofcontents/init.lua b/packages/tableofcontents/init.lua
index 7a6c0b835..248ce9d6c 100644
--- a/packages/tableofcontents/init.lua
+++ b/packages/tableofcontents/init.lua
@@ -38,12 +38,13 @@ function package.readToc (_)
       -- already loaded
       return SILE.scratch._tableofcontents
    end
-   local tocfile, _ = io.open(pl.path.splitext(SILE.input.filenames[1]) .. ".toc")
+   local tocfile_name = (pl.path.splitext(SILE.input.filenames[1]) .. ".toc")
+   local tocfile, _ = io.open(tocfile_name)
    if not tocfile then
       return false -- No TOC yet
    end
    local doc = tocfile:read("*all")
-   local toc = assert(load(doc))()
+   local toc = assert(load(doc), tocfile_name, "r")()
    SILE.scratch._tableofcontents = toc
    return SILE.scratch._tableofcontents
 end