diff --git a/tests/gen_library.sh b/tests/gen_library.sh
index 9255cfc8..b203919f 100755
--- a/tests/gen_library.sh
+++ b/tests/gen_library.sh
@@ -18,7 +18,7 @@ function tag_file()
 mkdir -p /tmp/ocarina/dir{1..5}
 
 for i in $(seq 5); do
-	cp tests/Music/* /tmp/ocarina/dir$i/
+	cp tests/Music/*.ogg /tmp/ocarina/dir$i/
 
 	for f in /tmp/ocarina/dir$i/*; do
 		tag_file $f $i