diff --git a/src/d_netfil.c b/src/d_netfil.c
index 32a328dc8..a56eab9d1 100644
--- a/src/d_netfil.c
+++ b/src/d_netfil.c
@@ -60,6 +60,14 @@
 
 #include <errno.h>
 
+#ifdef HAVE_CURL
+#	if LIBCURL_VERSION_MAJOR >= 7 && LIBCURL_VERSION_MINOR >= 85
+#		define PROTOCOLS_CURLOPT CURLOPT_PROTOCOLS_STR
+#	else
+#		define PROTOCOLS_CURLOPT CURLOPT_PROTOCOLS // deprecated in 7.85.0
+#	endif
+#endif
+
 // Prototypes
 static boolean AddFileToSendQueue(INT32 node, const char *filename, UINT8 fileid);
 
@@ -1716,7 +1724,7 @@ void CURLPrepareFile(const char* url, int dfilenum)
 		curl_easy_setopt(http_handle, CURLOPT_URL, va("%s/%s", url, curl_realname));
 
 		// Only allow HTTP and HTTPS
-		curl_easy_setopt(http_handle, CURLOPT_PROTOCOLS, CURLPROTO_HTTP|CURLPROTO_HTTPS);
+		curl_easy_setopt(http_handle, PROTOCOLS_CURLOPT, CURLPROTO_HTTP|CURLPROTO_HTTPS);
 
 		curl_easy_setopt(http_handle, CURLOPT_USERAGENT, va("SRB2Kart/v%d.%d", VERSION, SUBVERSION)); // Set user agent as some servers won't accept invalid user agents.