--- a/src/luacov/reporter.lua
+++ b/src/luacov/reporter.lua
@@ -25,7 +25,7 @@
                entry=directory.."/"..entry
                local attr=lfs.attributes(entry)
                coroutine.yield(entry,attr)
-               if attr.mode == "directory" then
+               if attr and attr.mode == "directory" then
                    yieldtree(entry)
                end
            end
@@ -95,7 +95,7 @@
          os.exit(1)
       end
       for filename, attr in dirtree("./") do
-         if attr.mode == "file" and fileMatches(filename, '.%.lua$') then
+         if attr and attr.mode == "file" and fileMatches(filename, '.%.lua$') then
             local file_stats = {}
             file_stats[0] = 0
             if luacov.file_included(filename) then