1 files changed, 4 insertions, 3 deletions
diff --git a/src/kernel/serial.c b/src/kernel/serial.c
index 0f7abe6..c92f173 100644
--- a/src/kernel/serial.c
+++ b/src/kernel/serial.c
@@ -1,5 +1,6 @@
-#include <stdint.h>
 #include <stdbool.h>
+#include <stdint.h>
+#include "serial.h"
 #include "util.h"
 
 enum {
@@ -76,12 +77,12 @@ void sout(char b) {
   outb(CP_1 | CP_DATA, (uint8_t)b);
 }
 
-void soutsz(char *s) {
+void soutsz(const char *s) {
   while (*s)
     sout(*(s++));
 }
 
-void soutsn(char *s, uint8_t n) {
+void soutsn(const char *s, uint8_t n) {
   while (n--)
     sout(*(s++));
 }