diff --git a/transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoopGroup.java b/transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoopGroup.java
index f62bf88849..acb4212fe9 100644
--- a/transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoopGroup.java
+++ b/transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoopGroup.java
@@ -33,8 +33,8 @@ import java.util.concurrent.ThreadFactory;
  * it only works on linux.
  */
 public final class EpollEventLoopGroup extends MultithreadEventLoopGroup {
-    static {
-        // Ensure JNI is initialized by the time this class is loaded by this time!
+    {
+        // Ensure JNI is initialized by the time this class is loaded.
         Epoll.ensureAvailability();
     }
 
@@ -102,25 +102,21 @@ public final class EpollEventLoopGroup extends MultithreadEventLoopGroup {
     public EpollEventLoopGroup(int nThreads, ThreadFactory threadFactory, int maxEventsAtOnce,
                                SelectStrategyFactory selectStrategyFactory) {
         super(nThreads, threadFactory, maxEventsAtOnce, selectStrategyFactory, RejectedExecutionHandlers.reject());
-        Epoll.ensureAvailability();
     }
 
     public EpollEventLoopGroup(int nThreads, Executor executor, SelectStrategyFactory selectStrategyFactory) {
         super(nThreads, executor, 0, selectStrategyFactory, RejectedExecutionHandlers.reject());
-        Epoll.ensureAvailability();
     }
 
     public EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
                                SelectStrategyFactory selectStrategyFactory) {
         super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, RejectedExecutionHandlers.reject());
-        Epoll.ensureAvailability();
     }
 
     public EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
                                SelectStrategyFactory selectStrategyFactory,
                                RejectedExecutionHandler rejectedExecutionHandler) {
         super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, rejectedExecutionHandler);
-        Epoll.ensureAvailability();
     }
 
     /**
diff --git a/transport-native-kqueue/src/main/java/io/netty/channel/kqueue/KQueueEventLoopGroup.java b/transport-native-kqueue/src/main/java/io/netty/channel/kqueue/KQueueEventLoopGroup.java
index 60fc24bc54..fe32aa5a7b 100644
--- a/transport-native-kqueue/src/main/java/io/netty/channel/kqueue/KQueueEventLoopGroup.java
+++ b/transport-native-kqueue/src/main/java/io/netty/channel/kqueue/KQueueEventLoopGroup.java
@@ -30,7 +30,7 @@ import java.util.concurrent.ThreadFactory;
 
 @UnstableApi
 public final class KQueueEventLoopGroup extends MultithreadEventLoopGroup {
-    static {
+    {
         // Ensure JNI is initialized by the time this class is loaded by this time!
         KQueue.ensureAvailability();
     }