diff --git a/afsk/main.c b/afsk/main.c
index e6de86fd..3709542d 100644
--- a/afsk/main.c
+++ b/afsk/main.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <string.h>
 #include "status.h"
+#include <stdio.h>
 #include "ax5043.h"
 #include "ax25.h"
 #include "spi/ax5043spi.h"