diff --git a/src/network/networkd-json.c b/src/network/networkd-json.c
index 894badd6f9..aa0c606543 100644
--- a/src/network/networkd-json.c
+++ b/src/network/networkd-json.c
@@ -697,7 +697,7 @@ static int server_build_json_one_string(const char *str, NetworkConfigSource s,
 }
 
 static int ntp_build_json(Link *link, JsonVariant **ret) {
-        JsonVariant **elements;
+        JsonVariant **elements = NULL;
         size_t n = 0;
         char **p;
         int r;