diff --git a/src/dns/mod.mk b/src/dns/mod.mk
index 8aefd4c..4ac75b7 100644
--- a/src/dns/mod.mk
+++ b/src/dns/mod.mk
@@ -13,7 +13,7 @@ SRCS	+= dns/rr.c
 SRCS	+= dns/rrlist.c
 
 ifneq ($(HAVE_LIBRESOLV),)
-ifeq ($(OS),netbsd)
+ifeq ($(filter-out netbsd openbsd,$(OS)),)
 SRCS	+= dns/netbsd/srv.c
 else
 SRCS	+= dns/res.c