diff --git a/content/fetch.c b/content/fetch.c
index 1fcc3f996..3ef836e8a 100644
--- a/content/fetch.c
+++ b/content/fetch.c
@@ -726,7 +726,7 @@ fetch_multipart_data_new_kv(struct fetch_multipart_data **list,
 
 	assert(list);
 
-	newdata = calloc(sizeof(*newdata), 1);
+	newdata = calloc(1, sizeof(*newdata));
 
 	if (newdata == NULL) {
 		return NSERROR_NOMEM;