diff --git a/bin/tools/Makefile.am b/bin/tools/Makefile.am
index 0c0f18b0b2..ff9bef39e9 100644
--- a/bin/tools/Makefile.am
+++ b/bin/tools/Makefile.am
@@ -24,6 +24,7 @@ mdig_CPPFLAGS =			\
 
 mdig_LDADD =			\
 	$(LIBBIND9_LIBS)	\
+	$(LIBISCCFG_LIBS)	\
 	$(LIBDNS_LIBS)		\
 	$(LIBISC_LIBS)