diff --git a/src/java.net.http/share/classes/jdk/internal/net/http/Stream.java b/src/java.net.http/share/classes/jdk/internal/net/http/Stream.java
index fa00ae1949c..f6447ade1e3 100644
--- a/src/java.net.http/share/classes/jdk/internal/net/http/Stream.java
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/Stream.java
@@ -622,7 +622,7 @@ class Stream<T> extends ExchangeImpl<T> {
                 }
                 closed = true;
             } finally {
-                stateLock.lock();
+                stateLock.unlock();
             }
             try {
                 int error = frame.getErrorCode();