1 files changed, 2 insertions, 0 deletions

diff --git a/main.h b/main.h
index afc1772..9e57d51 100644
--- a/main.h
+++ b/main.h
@@ -20,6 +20,8 @@
 #ifndef MAIN_H
 #define MAIN_H
 
+#include <stdio.h>
+
 typedef enum
 {
   TIMER_INACTIVE,