diff --git a/src/printf.h b/src/printf.h
index b60eea58..512004ce 100644
--- a/src/printf.h
+++ b/src/printf.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "arch.h"
+#include "fmt.h"
 #include "iobuf.h"
 #include "queue.h"