diff --git a/packages/services/src/kernel/messages.ts b/packages/services/src/kernel/messages.ts
index 8c1bd6561581..e1746e2e5f16 100644
--- a/packages/services/src/kernel/messages.ts
+++ b/packages/services/src/kernel/messages.ts
@@ -986,7 +986,7 @@ export namespace KernelMessage {
   }
 
   /**
-   * An `execute_request` message on the `
+   * An `execute_request` message on the `'shell'` channel.
    */
   export interface IExecuteRequestMsg extends IShellMessage<'execute_request'> {
     content: {