diff --git a/handlers/static.ts b/handlers/static.ts
index f6865963..51c73095 100644
--- a/handlers/static.ts
+++ b/handlers/static.ts
@@ -14,7 +14,7 @@ export interface staticHandlerOptions extends HandlerOptions {
  * Optionally: provide custom headers and/or body transform fcn.
  * 
  * @param fileURL: URL object of file address
- * @param opts: (optional) HandlerOptions
+ * @param opts: (optional) staticHandlerOptions
  * @returns Handler: (ctx: RequestContext) => Promise<Response>
  */
 export const staticHandler = (fileURL: URL, opts: staticHandlerOptions = {}): Handler => async (_ctx: RequestContext) => {
diff --git a/server.ts b/server.ts
index df0319b8..31c9e96c 100644
--- a/server.ts
+++ b/server.ts
@@ -60,14 +60,19 @@ export class Server extends Router {
    * Start listening to HTTP requests.
    * @param port: number
    * @param onListen: onListen callback function
-   * @param onError: onListen callback function
+   * @param onError: error handler
    */
-  async listen(port?: number, onListen?: (server: stdServer) => void): Promise<void> {
+  async listen(
+    port?: number,
+    onListen?: (server: stdServer) => void,
+    onError?: (error: unknown) => Response | Promise<Response>
+  ): Promise<void> {
     if (port) this.port = port
     
     this.stdServer = new stdServer({ 
       port: this.port, 
-      handler: (request: Request) => this.requestHandler.call(this, request) 
+      handler: (request: Request) => this.requestHandler.call(this, request),
+      onError
     })
 
     if (onListen) {