diff --git a/http-push.c b/http-push.c
index 6a4a43e07f..2e6fee3305 100644
--- a/http-push.c
+++ b/http-push.c
@@ -894,7 +894,7 @@ static struct remote_lock *lock_remote(const char *path, long timeout)
 	slot->results = &results;
 	curl_setup_http(slot->curl, url, DAV_LOCK, &out_buffer, fwrite_buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
 
 	lock = xcalloc(1, sizeof(*lock));
 	lock->timeout = -1;
@@ -1151,7 +1151,7 @@ static void remote_ls(const char *path, int flags,
 	curl_setup_http(slot->curl, url, DAV_PROPFIND,
 			&out_buffer, fwrite_buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
 
 	if (start_active_slot(slot)) {
 		run_active_slot(slot);
@@ -1225,7 +1225,7 @@ static int locking_available(void)
 	curl_setup_http(slot->curl, repo->url, DAV_PROPFIND,
 			&out_buffer, fwrite_buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
 
 	if (start_active_slot(slot)) {
 		run_active_slot(slot);
diff --git a/http-walker.c b/http-walker.c
index 4fb1235cd4..6c630711d1 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -384,7 +384,7 @@ static void fetch_alternates(struct walker *walker, const char *base)
 	alt_req.walker = walker;
 	slot->callback_data = &alt_req;
 
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_URL, url.buf);
 
diff --git a/http.c b/http.c
index 8b23a546af..b3c1669388 100644
--- a/http.c
+++ b/http.c
@@ -1921,7 +1921,7 @@ static int http_request(const char *url,
 		curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
 	} else {
 		curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
-		curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
+		curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, result);
 
 		if (target == HTTP_REQUEST_FILE) {
 			off_t posn = ftello(result);
@@ -2337,7 +2337,7 @@ struct http_pack_request *new_direct_http_pack_request(
 	}
 
 	preq->slot = get_active_slot();
-	curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
+	curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEDATA, preq->packfile);
 	curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
 	curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
 	curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
@@ -2508,7 +2508,7 @@ struct http_object_request *new_http_object_request(const char *base_url,
 
 	freq->slot = get_active_slot();
 
-	curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
+	curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEDATA, freq);
 	curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0);
 	curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
 	curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
diff --git a/remote-curl.c b/remote-curl.c
index 32cc4a0c55..7f44fa30fe 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -847,7 +847,7 @@ static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
 	curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
 	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &buf);
 
 	err = run_slot(slot, results);
 
@@ -1012,7 +1012,7 @@ static int post_rpc(struct rpc_state *rpc, int stateless_connect, int flush_rece
 	rpc_in_data.slot = slot;
 	rpc_in_data.check_pktline = stateless_connect;
 	memset(&rpc_in_data.pktline_state, 0, sizeof(rpc_in_data.pktline_state));
-	curl_easy_setopt(slot->curl, CURLOPT_FILE, &rpc_in_data);
+	curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &rpc_in_data);
 	curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
 
 
