diff --git a/common/src/main/java/io/netty/util/internal/PlatformDependent.java b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
index c795bc6881..0bd753849a 100644
--- a/common/src/main/java/io/netty/util/internal/PlatformDependent.java
+++ b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
@@ -50,10 +50,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedDeque;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.LinkedBlockingDeque;
-import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
 import java.util.concurrent.atomic.AtomicLong;
-import java.util.concurrent.atomic.AtomicLongFieldUpdater;
-import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;