diff --git a/src/common/tuklib_exit.c b/src/common/tuklib_exit.c
index df3ec2da1297f47c40b5b9ea04ebc7a04e4d6a2f_c3JjL2NvbW1vbi90dWtsaWJfZXhpdC5j..7c6653df864d2ddae65e1ee9337a5872e4c427a5_c3JjL2NvbW1vbi90dWtsaWJfZXhpdC5j 100644
--- a/src/common/tuklib_exit.c
+++ b/src/common/tuklib_exit.c
@@ -14,6 +14,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "tuklib_gettext.h"
 #include "tuklib_progname.h"