diff --git a/buffer/src/main/java/io/netty/buffer/DefaultCompositeByteBuf.java b/buffer/src/main/java/io/netty/buffer/DefaultCompositeByteBuf.java
index 5d75744318..c6d54134c3 100644
--- a/buffer/src/main/java/io/netty/buffer/DefaultCompositeByteBuf.java
+++ b/buffer/src/main/java/io/netty/buffer/DefaultCompositeByteBuf.java
@@ -45,7 +45,7 @@ public class DefaultCompositeByteBuf extends AbstractReferenceCountedByteBuf
 
     private static final ByteBuffer[] EMPTY_NIOBUFFERS = new ByteBuffer[0];
 
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
     private final ByteBufAllocator alloc;
     private final boolean direct;
     private final List<Component> components = new ArrayList<Component>();
@@ -64,6 +64,7 @@ public class DefaultCompositeByteBuf extends AbstractReferenceCountedByteBuf
         this.alloc = alloc;
         this.direct = direct;
         this.maxNumComponents = maxNumComponents;
+        leak = leakDetector.open(this);
     }
 
     public DefaultCompositeByteBuf(ByteBufAllocator alloc, boolean direct, int maxNumComponents, ByteBuf... buffers) {
@@ -83,6 +84,7 @@ public class DefaultCompositeByteBuf extends AbstractReferenceCountedByteBuf
         addComponents0(0, buffers);
         consolidateIfNeeded();
         setIndex(0, capacity());
+        leak = leakDetector.open(this);
     }
 
     public DefaultCompositeByteBuf(
@@ -102,6 +104,7 @@ public class DefaultCompositeByteBuf extends AbstractReferenceCountedByteBuf
         addComponents0(0, buffers);
         consolidateIfNeeded();
         setIndex(0, capacity());
+        leak = leakDetector.open(this);
     }
 
     @Override
diff --git a/buffer/src/main/java/io/netty/buffer/PooledByteBuf.java b/buffer/src/main/java/io/netty/buffer/PooledByteBuf.java
index f3ff565073..1e67c88c44 100644
--- a/buffer/src/main/java/io/netty/buffer/PooledByteBuf.java
+++ b/buffer/src/main/java/io/netty/buffer/PooledByteBuf.java
@@ -25,7 +25,7 @@ import java.util.Queue;
 
 abstract class PooledByteBuf<T> extends AbstractReferenceCountedByteBuf {
 
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
 
     protected PoolChunk<T> chunk;
     protected long handle;
@@ -39,6 +39,7 @@ abstract class PooledByteBuf<T> extends AbstractReferenceCountedByteBuf {
 
     protected PooledByteBuf(int maxCapacity) {
         super(maxCapacity);
+        leak = leakDetector.open(this);
     }
 
     void init(PoolChunk<T> chunk, long handle, int offset, int length, int maxLength) {
diff --git a/buffer/src/main/java/io/netty/buffer/ReadOnlyByteBufferBuf.java b/buffer/src/main/java/io/netty/buffer/ReadOnlyByteBufferBuf.java
index 690fc61ec0..dd5345d63f 100644
--- a/buffer/src/main/java/io/netty/buffer/ReadOnlyByteBufferBuf.java
+++ b/buffer/src/main/java/io/netty/buffer/ReadOnlyByteBufferBuf.java
@@ -31,7 +31,7 @@ import java.nio.channels.ScatteringByteChannel;
  * Read-only ByteBuf which wraps a read-only ByteBuffer.
  */
 class ReadOnlyByteBufferBuf extends AbstractReferenceCountedByteBuf {
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
 
     protected final ByteBuffer buffer;
     private final ByteBufAllocator allocator;
@@ -46,6 +46,7 @@ class ReadOnlyByteBufferBuf extends AbstractReferenceCountedByteBuf {
         this.allocator = allocator;
         this.buffer = buffer.slice().order(ByteOrder.BIG_ENDIAN);
         writerIndex(buffer.limit());
+        leak = leakDetector.open(this);
     }
 
     @Override
diff --git a/buffer/src/main/java/io/netty/buffer/UnpooledDirectByteBuf.java b/buffer/src/main/java/io/netty/buffer/UnpooledDirectByteBuf.java
index 689ac4755d..b066299297 100644
--- a/buffer/src/main/java/io/netty/buffer/UnpooledDirectByteBuf.java
+++ b/buffer/src/main/java/io/netty/buffer/UnpooledDirectByteBuf.java
@@ -36,7 +36,7 @@ import java.util.Queue;
  */
 public class UnpooledDirectByteBuf extends AbstractReferenceCountedByteBuf {
 
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
     private final ByteBufAllocator alloc;
 
     private ByteBuffer buffer;
@@ -69,6 +69,7 @@ public class UnpooledDirectByteBuf extends AbstractReferenceCountedByteBuf {
 
         this.alloc = alloc;
         setByteBuffer(ByteBuffer.allocateDirect(initialCapacity));
+        leak = leakDetector.open(this);
     }
 
     /**
@@ -101,6 +102,7 @@ public class UnpooledDirectByteBuf extends AbstractReferenceCountedByteBuf {
         doNotFree = true;
         setByteBuffer(initialBuffer.slice().order(ByteOrder.BIG_ENDIAN));
         writerIndex(initialCapacity);
+        leak = leakDetector.open(this);
     }
 
     private void setByteBuffer(ByteBuffer buffer) {
diff --git a/buffer/src/main/java/io/netty/buffer/UnpooledUnsafeDirectByteBuf.java b/buffer/src/main/java/io/netty/buffer/UnpooledUnsafeDirectByteBuf.java
index d357ad9cad..8875613271 100644
--- a/buffer/src/main/java/io/netty/buffer/UnpooledUnsafeDirectByteBuf.java
+++ b/buffer/src/main/java/io/netty/buffer/UnpooledUnsafeDirectByteBuf.java
@@ -38,7 +38,7 @@ public class UnpooledUnsafeDirectByteBuf extends AbstractReferenceCountedByteBuf
 
     private static final boolean NATIVE_ORDER = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;
 
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
     private final ByteBufAllocator alloc;
 
     private long memoryAddress;
@@ -72,6 +72,7 @@ public class UnpooledUnsafeDirectByteBuf extends AbstractReferenceCountedByteBuf
 
         this.alloc = alloc;
         setByteBuffer(ByteBuffer.allocateDirect(initialCapacity));
+        leak = leakDetector.open(this);
     }
 
     /**
@@ -104,6 +105,7 @@ public class UnpooledUnsafeDirectByteBuf extends AbstractReferenceCountedByteBuf
         doNotFree = true;
         setByteBuffer(initialBuffer.slice().order(ByteOrder.BIG_ENDIAN));
         writerIndex(initialCapacity);
+        leak = leakDetector.open(this);
     }
 
     private void setByteBuffer(ByteBuffer buffer) {
diff --git a/common/src/main/java/io/netty/util/HashedWheelTimer.java b/common/src/main/java/io/netty/util/HashedWheelTimer.java
index 889d7f1599..6bc384d626 100644
--- a/common/src/main/java/io/netty/util/HashedWheelTimer.java
+++ b/common/src/main/java/io/netty/util/HashedWheelTimer.java
@@ -82,7 +82,7 @@ public class HashedWheelTimer implements Timer {
             new ResourceLeakDetector<HashedWheelTimer>(
                     HashedWheelTimer.class, 1, Runtime.getRuntime().availableProcessors() * 4);
 
-    private final ResourceLeak leak = leakDetector.open(this);
+    private final ResourceLeak leak;
     private final Worker worker = new Worker();
     final Thread workerThread;
 
@@ -207,6 +207,7 @@ public class HashedWheelTimer implements Timer {
         }
 
         workerThread = threadFactory.newThread(worker);
+        leak = leakDetector.open(this);
     }
 
     @SuppressWarnings("unchecked")