diff --git a/lib/gemini.ex b/lib/gemini.ex
index 4960efa..3dfdb6b 100644
--- a/lib/gemini.ex
+++ b/lib/gemini.ex
@@ -72,12 +72,12 @@ defmodule Gemini do
 
         cond do
           preformatting_toggle && in_preformatting ->
-            {[:preformatting_end | lines], false}
+            {[:preformatted_end | lines], false}
 
           preformatting_toggle && !in_preformatting ->
             "```" <> alt = line
             alt = if alt == "", do: nil, else: alt
-            {[{:preformatting_start, alt} | lines], true}
+            {[{:preformatted_start, alt} | lines], true}
 
           in_preformatting ->
             {[{:preformatted, line} | lines], true}