1 files changed, 1 insertions, 0 deletions

diff --git a/strio.h b/strio.h
index 0d6c6f5..51cf44a 100644
--- a/strio.h
+++ b/strio.h
@@ -2,6 +2,7 @@
 #define STRIO_H
 
 #include <stdarg.h>
+#include <stdio.h>
 
 #include "str.h"
 #include "arena.h"