diff --git a/src/werkzeug/debug/shared/debugger.js b/src/werkzeug/debug/shared/debugger.js
index 809b14a6e..e74631431 100644
--- a/src/werkzeug/debug/shared/debugger.js
+++ b/src/werkzeug/debug/shared/debugger.js
@@ -216,7 +216,7 @@ function createConsole() {
 function createConsoleOutput() {
   const output = document.createElement("div");
   output.classList.add("output");
-  output.innerHTML = "[console ready]";
+  output.textContent = "[console ready]";
   return output;
 }