diff --git a/demo/web/archive.mjs b/demo/web/archive.mjs
index e9633fc43..9df648585 100644
--- a/demo/web/archive.mjs
+++ b/demo/web/archive.mjs
@@ -130,11 +130,10 @@ export class Archive {
       const item = this.files[index];
       report({ phase: "Inspecting files", input: item.name, completed: index, total: this.files.length });
       if (item.entry.directory || item.name.startsWith("sce_sys/")) continue;
+      if (item.name.startsWith("sce_module/") && item.name.endsWith(".guest.prx")) continue;
       const elf = await signature(item.entry);
       if (item.name.startsWith("sce_module/")) {
-        if (item.name.endsWith(".guest.prx")) throw new Error("Use the original files, without previously converted .guest.prx files");
         if (elf) this.modules.push(item);
-        else if (/\.(elf|prx|sprx|suprx|debug_prx)$/iu.test(item.name)) throw new Error(`The module is not a decrypted ELF: ${item.name}`);
       } else if (elf) executables.push(item);
     }
     if (executables.length !== 1) throw new Error(`Expected exactly one executable ELF outside sce_module; found ${executables.length}`);
@@ -212,7 +211,9 @@ export async function packageArchive(archive, converted, outputName, libraryFile
       if (!entry.filename.startsWith("libs/") || entry.encrypted || ((entry.externalFileAttributes >>> 16) & 0xf000) === 0xa000) throw new Error("Invalid library archive layout");
       claim(entry.filename);
     }
-    for (const item of archive.files) claim("app0/" + item.name);
+    const replaced = new Set(converted.modules.map(module => module.name));
+    const originalFiles = archive.files.filter(item => !replaced.has("app0/" + item.name));
+    for (const item of originalFiles) claim("app0/" + item.name);
     claim(outputName);
     for (const module of converted.modules) {
       if (!module.name.startsWith("app0/sce_module/")) throw new Error("Invalid converted module path");
@@ -225,7 +226,7 @@ export async function packageArchive(archive, converted, outputName, libraryFile
       if (entry.directory) await writer.add(entry.filename, undefined, { directory: true });
       else await appendEntry(writer, entry.filename, entry, report);
     }
-    for (const { entry, name } of archive.files) {
+    for (const { entry, name } of originalFiles) {
       if (entry.directory) await writer.add("app0/" + name, undefined, { directory: true });
       else await appendEntry(writer, "app0/" + name, entry, report);
     }
diff --git a/demo/web/tests/archive.test.mjs b/demo/web/tests/archive.test.mjs
index 4ab459b0c..3f26fa187 100644
--- a/demo/web/tests/archive.test.mjs
+++ b/demo/web/tests/archive.test.mjs
@@ -22,10 +22,12 @@ async function zip(entries) {
   return writer.close();
 }
 
-const source = await zip([["title/", null, { directory: true }], ["title/program.dat", executable], ["title/sce_module/library.elf", module], ["title/sce_sys/param.json", new TextEncoder().encode("{}")], ["title/content/resource.bin", resource]]);
+const source = await zip([["title/", null, { directory: true }], ["title/program.dat", executable], ["title/sce_module/library.prx.esbak", module], ["title/sce_module/library.prx", new Uint8Array([79, 21, 61, 29])], ["title/sce_module/library.prx.esbak.guest.prx", new Uint8Array([77, 90, 0, 0])], ["title/sce_sys/param.json", new TextEncoder().encode("{}")], ["title/content/resource.bin", resource]]);
 const folder = [
   { path: "title/program.dat", file: new Blob([executable]) },
-  { path: "title/sce_module/library.elf", file: new Blob([module]) },
+  { path: "title/sce_module/library.prx.esbak", file: new Blob([module]) },
+  { path: "title/sce_module/library.prx", file: new Blob([new Uint8Array([79, 21, 61, 29])]) },
+  { path: "title/sce_module/library.prx.esbak.guest.prx", file: new Blob([new Uint8Array([77, 90, 0, 0])]) },
   { path: "title/sce_sys/param.json", file: new Blob(["{}"]) },
   { path: "title/content/resource.bin", file: new Blob([resource]) }
 ];
@@ -40,7 +42,7 @@ for (const target of ["windows", "linux"]) {
   const input = await archive.conversionInput(target, false, () => {});
   assert.equal(input.modules.length, 1);
   assert.deepEqual(input.executable, executable);
-  assert.equal(input.modules[0].name, "sce_module/library.elf");
+  assert.equal(input.modules[0].name, "sce_module/library.prx.esbak");
   const events = [];
   const converted = native.Convert(input, event => events.push(event));
   assert.equal(converted.ok, true, converted.error);
@@ -61,7 +63,8 @@ for (const target of ["windows", "linux"]) {
   const byName = new Map(entries.map(entry => [entry.filename, entry]));
   assert(byName.has(input.outputName));
   assert(byName.has("libs/system.prx"));
-  assert(byName.has("app0/sce_module/library.elf.guest.prx"));
+  assert.deepEqual(await byName.get("app0/sce_module/library.prx.esbak.guest.prx").getData(new Uint8ArrayWriter(), { checkSignature: true }), converted.modules[0].bytes);
+  assert.deepEqual(await byName.get("app0/sce_module/library.prx").getData(new Uint8ArrayWriter(), { checkSignature: true }), new Uint8Array([79, 21, 61, 29]));
   assert.deepEqual(await byName.get("app0/program.dat").getData(new Uint8ArrayWriter(), { checkSignature: true }), executable);
   assert.deepEqual(await byName.get("app0/content/resource.bin").getData(new Uint8ArrayWriter(), { checkSignature: true }), resource);
   assert.equal((byName.get(input.outputName).externalFileAttributes >>> 16) & 0o777, 0o755);