diff --git a/core/src/test/java/com/linecorp/armeria/server/InitiateConnectionShutdownTest.java b/core/src/test/java/com/linecorp/armeria/server/InitiateConnectionShutdownTest.java
index c4b2c35c2c2..ae4b46a1e45 100644
--- a/core/src/test/java/com/linecorp/armeria/server/InitiateConnectionShutdownTest.java
+++ b/core/src/test/java/com/linecorp/armeria/server/InitiateConnectionShutdownTest.java
@@ -142,6 +142,7 @@ private void makeHttp2Request(String path) throws Exception {
         });
         await().untilTrue(finished);
         await().untilTrue(connectionClosed);
+        clientChannel.closeFuture().syncUninterruptibly();
     }
 
     @BeforeEach