diff --git a/configure.ac b/configure.ac
index a4a0fba656..527fc1b739 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1118,6 +1118,7 @@ case $host in
    *-darwin*)
         path_push_unique PKG_CONFIG_PATH /usr/local/opt/curl/lib/pkgconfig
         path_push_unique PKG_CONFIG_PATH /usr/local/opt/sqlite/lib/pkgconfig/
+        path_push_unique PKG_CONFIG_PATH /usr/local/opt/ldns/lib/pkgconfig/
        ;;
 esac