diff --git a/src/test/java/com/github/kokorin/jaffree/ffmpeg/FFmpegTest.java b/src/test/java/com/github/kokorin/jaffree/ffmpeg/FFmpegTest.java
index 7d78ffa9..91d845e4 100644
--- a/src/test/java/com/github/kokorin/jaffree/ffmpeg/FFmpegTest.java
+++ b/src/test/java/com/github/kokorin/jaffree/ffmpeg/FFmpegTest.java
@@ -30,13 +30,10 @@
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.nio.file.StandardOpenOption;
-import java.util.HashSet;
 import java.util.List;
-import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.atomic.AtomicReference;