diff --git a/src/printf-utils.c b/src/printf-utils.c
index 7e6bfac..939cf54 100644
--- a/src/printf-utils.c
+++ b/src/printf-utils.c
@@ -22,6 +22,10 @@
 #include <stdarg.h>
 #include <unistd.h>
 
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
 #include "global.h"
 
 #include "printf-utils.h"