diff --git a/Makefile b/Makefile
index 3a10a24..fa15d67 100644
--- a/Makefile
+++ b/Makefile
@@ -2,10 +2,9 @@ MultiThread = Yes
 HttpTorrent = Yes
 InstallPrefix = /usr/local/bin
 
-PROGNAME = torrent-verify
-CC = cc
-CFLAGS = -Wall -std=gnu11 -I./subm/heapless-bencode -Werror -O3
-CPPFLAGS = -DPROGRAM_NAME='"$(PROGNAME)"' -DBUILD_INFO \
+PROGNAME := torrent-verify
+CFLAGS := -Wall -std=gnu11 -I./subm/heapless-bencode -Werror -O2 -flto
+CPPFLAGS := -DPROGRAM_NAME='"$(PROGNAME)"' -DBUILD_INFO \
 		   -DBUILD_HASH="\"`git rev-parse --abbrev-ref HEAD` -> `git rev-parse --short HEAD`\"" -DBUILD_DATE="\"`date -I`\""
 
 ifeq ($(MultiThread), Yes)
diff --git a/src/metainfo_http.c b/src/metainfo_http.c
index d0a411c..451f26a 100644
--- a/src/metainfo_http.c
+++ b/src/metainfo_http.c
@@ -156,7 +156,8 @@ static int metainfo_http_progress(struct http_metainfo* h_meta) {
     return CURL_PROGRESSFUNC_CONTINUE;
 }
 
-static int connect_cb(void* data, char*, char*, int, int) {
+static int connect_cb(void* data, char* conn_ip, char* conn_local_ip,
+        int conn_port, int conn_local_port) {
     struct http_metainfo* h_meta = data;
     if (!opt_silent)
         clock_gettime(CLOCK_MONOTONIC_COARSE, &h_meta->progress.dlstart_time);