diff --git a/src/lib/err/torerr.c b/src/lib/err/torerr.c
index 81f3605964..8d8f694f1d 100644
--- a/src/lib/err/torerr.c
+++ b/src/lib/err/torerr.c
@@ -15,6 +15,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdio.h>
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif