1 files changed, 2 insertions, 1 deletions
diff --git a/util.h b/util.h
index 88ad996..898f10e 100644
--- a/util.h
+++ b/util.h
@@ -1,12 +1,13 @@
 #pragma once
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
 #include <unistd.h>
 
 
 int uniqid(void);
-void xxd(const void *buf, size_t length);
+void xxd(FILE *stream, const void *buf, size_t length);
 ssize_t readall(int fd, void *data, size_t length);
 ssize_t writeall(int fd, const void *data, size_t length);
 int maxi(int a, int b);