diff --git a/Quake/snd_umx.c b/Quake/snd_umx.c
index 6c632179..11bfbcd3 100644
--- a/Quake/snd_umx.c
+++ b/Quake/snd_umx.c
@@ -120,6 +120,7 @@ static int get_objtype (fshandle_t *f, int32_t ofs, int type)
 {
 	char sig[16];
 _retry:
+	memset(sig, 0, sizeof(sig));
 	FS_fseek(f, ofs, SEEK_SET);
 	FS_fread(sig, 16, 1, f);
 	if (type == UMUSIC_IT) {