diff --git a/common/src/main/java/org/conscrypt/OpenSSLEngineSocketImpl.java b/common/src/main/java/org/conscrypt/OpenSSLEngineSocketImpl.java
index df0ac6832..a8bfc60dd 100644
--- a/common/src/main/java/org/conscrypt/OpenSSLEngineSocketImpl.java
+++ b/common/src/main/java/org/conscrypt/OpenSSLEngineSocketImpl.java
@@ -387,7 +387,7 @@ private void write(ByteBuffer buffer) throws IOException {
                             }
                         } else {
                             // Target is a heap buffer.
-                            socketOutputStream.write(target.array(), 0, target.position());
+                            socketOutputStream.write(target.array(), 0, target.limit());
                         }
                         if (engineResult.getHandshakeStatus() == HandshakeStatus.FINISHED) {
                             completeHandshake();