diff --git a/docs/upscaler/index.html b/docs/upscaler/index.html
index 83b07a7f7..6c8e43b90 100644
--- a/docs/upscaler/index.html
+++ b/docs/upscaler/index.html
@@ -977,6 +977,9 @@
                     alert("Upscaling failed:\n" + error.message);
                 } finally {
                     processBtn.disabled = false;
+                    document.getElementById("progressFill").style.width = "0%";
+                    document.getElementById("progressText").textContent =
+                        "Start upscaling";
                 }
             }