diff --git a/src/luacov/reporter.lua b/src/luacov/reporter.lua
index 0aadce1..d041d10 100644
--- a/src/luacov/reporter.lua
+++ b/src/luacov/reporter.lua
@@ -33,7 +33,7 @@ local function dirtree(dir)
                entry=directory..dir_sep..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
@@ -130,7 +130,7 @@ function ReporterBase:new(conf)
       local function add_empty_dir_coverage_data(directory_path)
 
          for filename, attr in dirtree(directory_path) do
-            if attr.mode == "file" and fileMatches(filename, '.%.lua$') then
+            if attr and attr.mode == "file" and fileMatches(filename, '.%.lua$') then
                add_empty_file_coverage_data(filename)
             end
          end