add <isc/util.h>

diff --git a/lib/isc/tests/regex_test.c b/lib/isc/tests/regex_test.c
index 70510a09e26f8ade8c502bddc12ee823b4357b81..e79767938950b688ab14141b2798bbd6861715f0 100644 (file)
--- a/lib/isc/tests/regex_test.c
+++ b/lib/isc/tests/regex_test.c
@@ -27,6 +27,7 @@
 #endif
 
 #include <isc/regex.h>
+#include <isc/util.h>
 
 ATF_TC(regex_validate);
 ATF_TC_HEAD(regex_validate, tc) {