diff --git a/filters/include-code-files.lua b/filters/include-code-files.lua
index 5a5269c..162d546 100644
--- a/filters/include-code-files.lua
+++ b/filters/include-code-files.lua
@@ -44,9 +44,9 @@ local function transclude (cb)
           end
         end
         number = number + 1
-      end 
+      end
       fh:close()
-    end     
+    end
     -- remove key-value pair for used keys
     cb.attributes.include = nil
     cb.attributes.startLine = nil