diff --git a/pages/common/lex.md b/pages/common/lex.md
index 668e92de0..feb76b066 100644
--- a/pages/common/lex.md
+++ b/pages/common/lex.md
@@ -9,4 +9,4 @@
 
 - Compile a C file generated by lex:
 
-`cc {{path/to/lex.yy.c}} -o {{example}}`
+`cc {{path/to/lex.yy.c}} --output {{example}}`