diff --git a/service-worker.js b/service-worker.js
index 53090e16..8f380adb 100644
--- a/service-worker.js
+++ b/service-worker.js
@@ -227,7 +227,9 @@ if ('WebAssembly' in self) {
 } else {
   precacheFiles.push(
     "www/js/lib/xzdec-asm.js",
-    "www/js/lib/zstddec-asm.js"
+    "www/js/lib/zstddec-asm.js",
+    "www/js/lib/libzim-asm.js",
+    "www/js/lib/libzim-asm.js.mem"
   );
 }
 
diff --git a/www/js/lib/libzim-asm.js.REMOVED.git-id b/www/js/lib/libzim-asm.js.REMOVED.git-id
new file mode 100644
index 00000000..7f805c3e
--- /dev/null
+++ b/www/js/lib/libzim-asm.js.REMOVED.git-id
@@ -0,0 +1 @@
+d427a780021f37961e7a1ed0df634eadf2c02112
\ No newline at end of file
diff --git a/www/js/lib/libzim-asm.js.mem b/www/js/lib/libzim-asm.js.mem
new file mode 100644
index 00000000..275756c0
Binary files /dev/null and b/www/js/lib/libzim-asm.js.mem differ
diff --git a/www/js/lib/zimArchive.js b/www/js/lib/zimArchive.js
index 22c170fe..9a2ca5ed 100644
--- a/www/js/lib/zimArchive.js
+++ b/www/js/lib/zimArchive.js
@@ -93,7 +93,7 @@ define(['zimfile', 'zimDirEntry', 'transformZimit', 'util', 'uiUtil', 'utf8'],
                     var isSplitZim = /\.zima.$/i.test(that._file._files[0].name);
                     if ('WebAssembly' in self && that._file.fullTextIndex && !isSplitZim) {
                         console.log('Instantiating libzim Web Worker...');
-                        libzimWorker = new Worker('js/lib/libzim-wasm.js');
+                        libzimWorker = new Worker('js/lib/libzim-asm.js');
                         that.callLibzimWorker({action: "init", files: that._file._files})
                         .then(function () {
                             params.searchProvider = 'fulltext';