diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5f3b0fb..bce5147 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,7 +30,6 @@ jobs:
         working-directory: ${{runner.workspace}}/sfizz-webaudio/build
         run: |
           cmake --build . --config "$BUILD_TYPE" -j 2
-          echo "export default Module;" >> sfizz.wasm.js
       - name: Inspect directory
         working-directory: ${{runner.workspace}}/sfizz-webaudio
         run: |
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0a67a40..de81d18 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ add_executable(sfizz-webaudio)
 target_sources(sfizz-webaudio PRIVATE sfizz_webaudio.cpp)
 target_link_libraries(sfizz-webaudio PRIVATE sfizz::sfizz)
 set_target_properties(sfizz-webaudio PROPERTIES 
-    LINK_FLAGS "--bind -s ENVIRONMENT=web -s ALLOW_MEMORY_GROWTH=1 -s SINGLE_FILE=1 -s WASM=1 -s WASM_ASYNC_COMPILATION=0"
+LINK_FLAGS "--bind -s ENVIRONMENT=web -s ALLOW_MEMORY_GROWTH=1 -s SINGLE_FILE=1 -s WASM=1 -s WASM_ASYNC_COMPILATION=0 -s EXPORTED_FUNCTIONS=\"['_malloc']\" -s EXPORT_ES6=1"
     OUTPUT_NAME sfizz.wasm
 )
 
diff --git a/README.md b/README.md
index 5da788b..59abbdf 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,6 @@ mkdir build
 cd build
 emcmake cmake -DCMAKE_BUILD_TYPE=Release ..
 make -j
-echo "export default Module;" >> sfizz.wasm.js
 ```
 
 From the `build` directory, you may then host the result on `localhost:8000` using python as
diff --git a/sfizz-processor.js b/sfizz-processor.js
index c8f020c..df124e3 100644
--- a/sfizz-processor.js
+++ b/sfizz-processor.js
@@ -21,6 +21,8 @@
 import Module from './build/sfizz.wasm.js';
 import WASMAudioBuffer from './util/WASMAudioBuffer.js';
 
+const SfizzModule = new Module();
+
 // Web Audio API's render block size
 const NUM_FRAMES = 128;
 
@@ -29,9 +31,9 @@ class SfizzProcessor extends AudioWorkletProcessor {
     super();
     // Create an instance of Synthesizer and WASM memory helper. Then set up an
     // event handler for MIDI data from the main thread.
-    this._synth = new Module.SfizzWrapper(sampleRate);
-    this._leftBuffer = new WASMAudioBuffer(Module, NUM_FRAMES, 1, 1);
-    this._rightBuffer = new WASMAudioBuffer(Module, NUM_FRAMES, 1, 1);
+    this._synth = new SfizzModule.SfizzWrapper(sampleRate);
+    this._leftBuffer = new WASMAudioBuffer(SfizzModule, NUM_FRAMES, 1, 1);
+    this._rightBuffer = new WASMAudioBuffer(SfizzModule, NUM_FRAMES, 1, 1);
     this._activeVoices = 0;
     this.port.onmessage = this._handleMessage.bind(this);
   }