diff --git a/config.def.h b/config.def.h
index e7af17f0..3d733a2d 100644
--- a/config.def.h
+++ b/config.def.h
@@ -3,7 +3,7 @@
 #define EMPTY "   "
 
 struct assoc assocs[] = {
-	{ "\\.(avi|mp4|mkv|mp3|ogg)$", "mplayer" },
+	{ "\\.(avi|mp4|mkv|mp3|ogg|flac)$", "mplayer" },
 	{ "\\.(png|jpg|gif)$", "feh" },
 	{ "\\.(html|svg)$", "firefox" },
 	{ "\\.pdf$", "mupdf" },