diff --git a/http.c b/http.c
index 5798d6151a..0cec685b8d 100644
--- a/http.c
+++ b/http.c
@@ -1142,7 +1142,7 @@ static CURL *get_curl_handle(void)
 	}
 
 	curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20L);
-	curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
+	curl_easy_setopt(result, CURLOPT_POSTREDIR, (long)CURL_REDIR_POST_ALL);
 
 #ifdef GIT_CURL_HAVE_CURLOPT_PROTOCOLS_STR
 	{
@@ -1217,18 +1217,18 @@ static CURL *get_curl_handle(void)
 
 		if (starts_with(curl_http_proxy, "socks5h"))
 			curl_easy_setopt(result,
-				CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
+				CURLOPT_PROXYTYPE, (long)CURLPROXY_SOCKS5_HOSTNAME);
 		else if (starts_with(curl_http_proxy, "socks5"))
 			curl_easy_setopt(result,
-				CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
+				CURLOPT_PROXYTYPE, (long)CURLPROXY_SOCKS5);
 		else if (starts_with(curl_http_proxy, "socks4a"))
 			curl_easy_setopt(result,
-				CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
+				CURLOPT_PROXYTYPE, (long)CURLPROXY_SOCKS4A);
 		else if (starts_with(curl_http_proxy, "socks"))
 			curl_easy_setopt(result,
-				CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
+				CURLOPT_PROXYTYPE, (long)CURLPROXY_SOCKS4);
 		else if (starts_with(curl_http_proxy, "https")) {
-			curl_easy_setopt(result, CURLOPT_PROXYTYPE, CURLPROXY_HTTPS);
+			curl_easy_setopt(result, CURLOPT_PROXYTYPE, (long)CURLPROXY_HTTPS);
 
 			if (http_proxy_ssl_cert)
 				curl_easy_setopt(result, CURLOPT_PROXY_SSLCERT, http_proxy_ssl_cert);