diff --git a/src/ckb/channel.rs b/src/ckb/channel.rs
index 1615a037..47cdbb89 100644
--- a/src/ckb/channel.rs
+++ b/src/ckb/channel.rs
@@ -645,6 +645,10 @@ impl<S: ChannelActorStateStore> ChannelActor<S> {
     ) -> ProcessingChannelResult {
         debug!("Handling shutdown command: {:?}", &command);
         let flags = match state.state {
+            ChannelState::Closed => {
+                debug!("Channel already closed, ignoring shutdown command");
+                return Ok(());
+            }
             ChannelState::ChannelReady() => {
                 debug!("Handling shutdown command in ChannelReady state");
                 ShuttingDownFlags::empty()
@@ -652,9 +656,10 @@ impl<S: ChannelActorStateStore> ChannelActor<S> {
             ChannelState::ShuttingDown(flags) => flags,
             _ => {
                 debug!("Handling shutdown command in state {:?}", &state.state);
-                return Err(ProcessingChannelError::InvalidState(
-                    "Trying to send shutdown message while in invalid state".to_string(),
-                ));
+                return Err(ProcessingChannelError::InvalidState(format!(
+                    "Trying to send shutdown message while in invalid state {:?}",
+                    &state.state
+                )));
             }
         };
 
diff --git a/tests/bruno/e2e/3-nodes-transfer/22-node2-send-shutdown-channel-1.bru b/tests/bruno/e2e/3-nodes-transfer/22-node2-send-shutdown-channel-1.bru
index 022658c3..976927e7 100644
--- a/tests/bruno/e2e/3-nodes-transfer/22-node2-send-shutdown-channel-1.bru
+++ b/tests/bruno/e2e/3-nodes-transfer/22-node2-send-shutdown-channel-1.bru
@@ -35,15 +35,11 @@ body:json {
 }
 
 assert {
-  res.body.error: isDefined
-  res.body.result: isUndefined
+  res.body.error: isUndefined
+  res.body.result: isNull
 }
 
 script:post-response {
   // Sleep for sometime to make sure current operation finishes before next request starts.
-  // will get error message since channel is closed in previous step
   await new Promise(r => setTimeout(r, 100));
-  if (!(res.body.error.message === "Messaging failed because channel is closed")) {
-    throw new Error("Assertion failed: error message is not right");
-  }
 }
diff --git a/tests/bruno/e2e/3-nodes-transfer/24-node3-send-shutdown-channel-2.bru b/tests/bruno/e2e/3-nodes-transfer/24-node3-send-shutdown-channel-2.bru
index f0d3d0bd..4431e746 100644
--- a/tests/bruno/e2e/3-nodes-transfer/24-node3-send-shutdown-channel-2.bru
+++ b/tests/bruno/e2e/3-nodes-transfer/24-node3-send-shutdown-channel-2.bru
@@ -35,15 +35,6 @@ body:json {
 }
 
 assert {
-  res.body.error: isDefined
-  res.body.result: isUndefined
-}
-
-script:post-response {
-  // Sleep for sometime to make sure current operation finishes before next request starts.
-  // will get error message since channel is closed in previous step
-  await new Promise(r => setTimeout(r, 100));
-  if (!(res.body.error.message === "Messaging failed because channel is closed")) {
-    throw new Error("Assertion failed: error message is not right");
-  }
-}
+  res.body.error: isUndefined
+  res.body.result: isNull
+}
\ No newline at end of file
diff --git a/tests/bruno/e2e/udt/12-node2-send-shutdown-channel-error.bru b/tests/bruno/e2e/udt/12-node2-send-shutdown-channel-error.bru
index 9470f5b2..729b7c5f 100644
--- a/tests/bruno/e2e/udt/12-node2-send-shutdown-channel-error.bru
+++ b/tests/bruno/e2e/udt/12-node2-send-shutdown-channel-error.bru
@@ -35,15 +35,6 @@ body:json {
 }
 
 assert {
-  res.body.error: isDefined
-  res.body.result: isUndefined
-}
-
-script:post-response {
-  // Sleep for sometime to make sure current operation finishes before next request starts.
-  // will get error message since channel is closed in previous step
-  await new Promise(r => setTimeout(r, 100));
-  if (!(res.body.error.message === "Messaging failed because channel is closed")) {
-    throw new Error("Assertion failed: error message is not right");
-  }
-}
+  res.body.error: isUndefined
+  res.body.result: isNull
+}
\ No newline at end of file