diff --git a/libavformat/http.c b/libavformat/http.c
index fdfbc69da1..91650be47a 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -194,7 +194,7 @@ static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
     char *hashmark;
     char hostname[1024], hoststr[1024], proto[10];
     char auth[1024], proxyauth[1024] = "";
-    char path1[MAX_URL_SIZE], sanitized_path[MAX_URL_SIZE];
+    char path1[MAX_URL_SIZE], sanitized_path[MAX_URL_SIZE + 1];
     char buf[1024], urlbuf[MAX_URL_SIZE];
     int port, use_proxy, err, location_changed = 0;
     HTTPContext *s = h->priv_data;