diff --git a/day_1/lexer.l b/day_1/lexer.l
index 0518bdb..3d47176 100644
--- a/day_1/lexer.l
+++ b/day_1/lexer.l
@@ -1,4 +1,4 @@
-%{ /* -*- C -*- */
+%{
 #include <stdio.h>
 #include <stdlib.h>
 #include "parser.h"
diff --git a/day_2-1/lexer.l b/day_2-1/lexer.l
index 7e852a2..89948b3 100644
--- a/day_2-1/lexer.l
+++ b/day_2-1/lexer.l
@@ -1,4 +1,4 @@
-%{ /* -*- C -*- */
+%{
 #include <stdio.h>
 #include <stdlib.h>
 #include "parser.h"
diff --git a/day_2-2/lexer.l b/day_2-2/lexer.l
index 2e7bbe1..41af554 100644
--- a/day_2-2/lexer.l
+++ b/day_2-2/lexer.l
@@ -1,4 +1,4 @@
-%{ /* -*- C -*- */
+%{
 #include <stdio.h>
 #include <stdlib.h>
 #include "parser.h"
diff --git a/day_4/lexer.l b/day_4/lexer.l
index 0f8812a..62804ff 100644
--- a/day_4/lexer.l
+++ b/day_4/lexer.l
@@ -1,4 +1,4 @@
-%{ /* -*- C -*- */
+%{
 #include <stdio.h>
 #include <stdlib.h>
 #include "parser.h"