diff --git a/tubelib/api.md b/tubelib/api.md
index 3790821..198c5bf 100644
--- a/tubelib/api.md
+++ b/tubelib/api.md
@@ -246,8 +246,8 @@ topic related payload.
 	local items = tubelib.pull_items(pos, "L", player_name)
 	if items ~= nil then
 		if tubelib.push_items(pos, "R", items, player_name) == false then
-    		tubelib.unpull_items(pos, "L", items, player_name)
-    	end
+			tubelib.unpull_items(pos, "L", items, player_name)
+        end
     end
 ```