diff --git a/src/scan.c b/src/scan.c
index 85b36b3..ee72cf8 100644
--- a/src/scan.c
+++ b/src/scan.c
@@ -69,9 +69,9 @@ int scan_init(unsigned nb_files) {
 	 * It is now useless
 	 * https://github.com/FFmpeg/FFmpeg/blob/70d25268c21cbee5f08304da95be1f647c630c15/doc/APIchanges#L86
 	 */
-  if (avformat_version() < AV_VERSION_INT(58,9,100))
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,9,100)
     av_register_all();
-
+#endif
 	av_log_set_callback(scan_av_log);
 
 	scan_nb_files = nb_files;