diff --git a/alg/pre.wx.js b/alg/pre.wx.js
index 9ce3a74..edc8bd6 100644
--- a/alg/pre.wx.js
+++ b/alg/pre.wx.js
@@ -8,8 +8,11 @@ var performance = {
 Module['instantiateWasm'] = (info, receiveInstance) => {
   console.log("loading wasm...", info);
 
-  // Use provided wasmPath parameter, fallback to hardcoded path
-  var wasmPath = Module.wasmFilePath || "pages/emblemscanner/qrtool.wx.wasm.br";
+  // Use global wasmFilePath (should always be set by the main app)
+  var wasmPath = global.wasmFilePath;
+  if (!wasmPath) {
+    throw new Error("wasmFilePath must be provided via global.wasmFilePath");
+  }
   console.log("Using WASM path:", wasmPath);
 
   WebAssembly.instantiate(wasmPath, info).then((result) => {
diff --git a/scanner/pages/emblemscanner/libemblemscanner.js b/scanner/pages/emblemscanner/libemblemscanner.js
index f155cc5..c2f1c37 100644
--- a/scanner/pages/emblemscanner/libemblemscanner.js
+++ b/scanner/pages/emblemscanner/libemblemscanner.js
@@ -164,6 +164,7 @@ function get_current_package_path() {
  */
 function get_wasm_file_path(filename) {
   const packagePath = get_current_package_path();
+  console.log('current package path', packagePath);
   return `${packagePath}/${filename}`;
 }
 
diff --git a/scanner/pages/emblemscanner/qrprocessor.js b/scanner/pages/emblemscanner/qrprocessor.js
index 7e2a9f9..9ce736e 100644
--- a/scanner/pages/emblemscanner/qrprocessor.js
+++ b/scanner/pages/emblemscanner/qrprocessor.js
@@ -8,12 +8,12 @@ var qrtool_ready = false;
  * Load qrtool WASM module
  */
 function load_qrtool(wasmFilePath) {
+  // Set global WASM file path before loading the module
+  global.wasmFilePath = wasmFilePath;
+
   // Load the WASM module
   var m = require('./qrtool.wx.js');
 
-  // Set the WASM file path
-  m.wasmFilePath = wasmFilePath;
-
   m.onRuntimeInitialized = () => {
     qrtool_ready = true;
     qrtool = m;
diff --git a/scanner/pages/emblemscanner/qrtool.wx.js b/scanner/pages/emblemscanner/qrtool.wx.js
index 09366b0..2f5ae1c 100644
--- a/scanner/pages/emblemscanner/qrtool.wx.js
+++ b/scanner/pages/emblemscanner/qrtool.wx.js
@@ -34,8 +34,11 @@ var performance = {
 };
 Module["instantiateWasm"] = (info, receiveInstance) => {
   console.log("loading wasm...", info);
-  // Use provided wasmPath parameter, fallback to hardcoded path
-  var wasmPath = Module.wasmFilePath || "pages/emblemscanner/qrtool.wx.wasm.br";
+  // Use global wasmFilePath (should always be set by the main app)
+  var wasmPath = global.wasmFilePath;
+  if (!wasmPath) {
+    throw new Error("wasmFilePath must be provided via global.wasmFilePath");
+  }
   console.log("Using WASM path:", wasmPath);
   WebAssembly.instantiate(wasmPath, info).then(result => {
     console.log("result:", result);
diff --git a/scanner/pages/emblemscanner/worker/index.js b/scanner/pages/emblemscanner/worker/index.js
index a2a3ba7..7b883b8 100644
--- a/scanner/pages/emblemscanner/worker/index.js
+++ b/scanner/pages/emblemscanner/worker/index.js
@@ -1,11 +1,10 @@
 console.log("hello from emblemscanner worker");
 
-// Set WASM file path before loading qrtool
+// Set global WASM file path before loading qrtool
 // The wasmFilePath will be passed from the main thread when the worker is created
 if (typeof worker !== "undefined" && worker.wasmFilePath) {
-  let qrtoolModule = require('./qrtool.wx.js');
-  qrtoolModule.wasmFilePath = worker.wasmFilePath;
-  let qrtool = qrtoolModule;
+  global.wasmFilePath = worker.wasmFilePath;
+  let qrtool = require('./qrtool.wx.js');
 } else {
   let qrtool = require('./qrtool.wx.js');
 }
diff --git a/scanner/pages/emblemscanner/worker/qrtool.wx.js b/scanner/pages/emblemscanner/worker/qrtool.wx.js
index 09366b0..2f5ae1c 100644
--- a/scanner/pages/emblemscanner/worker/qrtool.wx.js
+++ b/scanner/pages/emblemscanner/worker/qrtool.wx.js
@@ -34,8 +34,11 @@ var performance = {
 };
 Module["instantiateWasm"] = (info, receiveInstance) => {
   console.log("loading wasm...", info);
-  // Use provided wasmPath parameter, fallback to hardcoded path
-  var wasmPath = Module.wasmFilePath || "pages/emblemscanner/qrtool.wx.wasm.br";
+  // Use global wasmFilePath (should always be set by the main app)
+  var wasmPath = global.wasmFilePath;
+  if (!wasmPath) {
+    throw new Error("wasmFilePath must be provided via global.wasmFilePath");
+  }
   console.log("Using WASM path:", wasmPath);
   WebAssembly.instantiate(wasmPath, info).then(result => {
     console.log("result:", result);