diff --git a/src/command_tracker.cc b/src/command_tracker.cc
index c62f0e60..e6f226aa 100644
--- a/src/command_tracker.cc
+++ b/src/command_tracker.cc
@@ -36,6 +36,7 @@
 
 #include "config.h"
 
+#include <cstdio>
 #include <rak/address_info.h>
 #include <rak/error_number.h>
 #include <torrent/dht_manager.h>