diff --git a/docs/USING_PRO.md b/docs/USING_PRO.md
index 5e80f547..50d98d9b 100644
--- a/docs/USING_PRO.md
+++ b/docs/USING_PRO.md
@@ -116,7 +116,7 @@ tokenizer.codespan = function(lexer, src) {
 };
 
 // Run marked
-console.log(marked('$ latext code $', { tokenizer }));
+console.log(marked('$ latex code $', { tokenizer }));
 ```
 
 **Output:**