diff --git a/src/injector/inject.ts b/src/injector/inject.ts
index f512992..6bd6b11 100644
--- a/src/injector/inject.ts
+++ b/src/injector/inject.ts
@@ -491,7 +491,7 @@ export function inject (vm: ChibiCompatibleVM) {
             sideloadTempButton.setAttribute('text', format('chibi.sideloadTemporarily'));
             sideloadTempButton.setAttribute('callbackKey', 'CHIBI_SIDELOAD_FROM_FILE_TEMPORAILY');
             workspace.registerButtonCallback('CHIBI_SIDELOAD_FROM_FILE_TEMPORAILY', () => {
-                if (prompt(format('chibi.exprimentalFileWarning'))) {
+                if (confirm(format('chibi.exprimentalFileWarning'))) {
                     const input = document.createElement('input');
                     input.setAttribute('type', 'file');
                     input.setAttribute('accept', '.js');
diff --git a/src/loader/loader.ts b/src/loader/loader.ts
index 7e3d86b..b4b0962 100644
--- a/src/loader/loader.ts
+++ b/src/loader/loader.ts
@@ -53,8 +53,12 @@ class UnsandboxedLoader {
                             new Blob(
                                 [
                                     `
-var Scratch = document.getElementById('chibiExtension')?.Scratch;
-eval(${JSON.stringify(`${code}\n//# sourceURL=${extensionURL}`)});
+/**
+ * Generated by Chibi
+ */
+let Scratch = document.getElementById('chibiExtension')?.Scratch;
+${code}
+//# sourceURL=${extensionURL}
 `
                                 ],
                                 { type: 'text/javascript' }