diff --git a/csrc/addon.cc b/csrc/addon.cc
index 7712b72..5590fc4 100644
--- a/csrc/addon.cc
+++ b/csrc/addon.cc
@@ -31,7 +31,8 @@ NAN_METHOD(convert) {
     reinterpret_cast<const uint8_t*>(input_data), input_length,
     reinterpret_cast<uint8_t*>(output_data), &actual_output_length
   )) {
-    Nan::ThrowError(Nan::Error("Could not convert the given font."));
+    free(output_data);
+    Nan::ThrowError(Nan::Error("E_CONVERT_ERROR"));
     return;
   }
 
diff --git a/csrc/fallback.cc b/csrc/fallback.cc
index 0dfe3b0..e070220 100644
--- a/csrc/fallback.cc
+++ b/csrc/fallback.cc
@@ -22,16 +22,19 @@ int convert(int inputDataAddress, int inputLength, int outputSizePtrAddress) {
 
   uint8_t* outputData = reinterpret_cast<uint8_t*>(calloc(outputSize, sizeof(uint8_t)));
 
-
   if(!woff2::ConvertTTFToWOFF2(
     reinterpret_cast<const uint8_t*>(inputData),
     inputLength,
     outputData,
     &outputSize
   )) {
-    // throw an error
+    outputData = reinterpret_cast<uint8_t*>(realloc(outputData, 0));
+    *outputSizePtr = 0;
+    return reinterpret_cast<int>(outputData);
   }
 
+  outputData = reinterpret_cast<uint8_t*>(realloc(outputData, outputSize));
+
   *outputSizePtr = outputSize;
 
   return reinterpret_cast<int>(outputData);
diff --git a/jssrc/index.js b/jssrc/index.js
index 2331edd..3adcd2f 100644
--- a/jssrc/index.js
+++ b/jssrc/index.js
@@ -1,31 +1,39 @@
+import { YError } from 'yerror';
 import theTTFToWOFF2Module from './ttf2woff2.cjs';
 
 export default function ttf2woff2(inputContent) {
   // Prepare input
   const inputBuffer = theTTFToWOFF2Module._malloc(inputContent.length + 1);
-  const outputSizePtr = theTTFToWOFF2Module._malloc(4); // eslint-disable-line
+  const outputSizePtr = theTTFToWOFF2Module._malloc(4);
   let outputBufferPtr;
   let outputSize;
   let outputContent;
 
   theTTFToWOFF2Module.writeArrayToMemory(inputContent, inputBuffer);
 
-  // Run
-  outputBufferPtr = theTTFToWOFF2Module.convert(
-    inputBuffer,
-    inputContent.length,
-    outputSizePtr,
-  );
+  try {
+    // Run
+    outputBufferPtr = theTTFToWOFF2Module.convert(
+      inputBuffer,
+      inputContent.length,
+      outputSizePtr,
+    );
 
-  // Retrieve output
-  outputSize = theTTFToWOFF2Module.getValue(outputSizePtr, 'i32');
-  outputContent = Buffer.alloc(outputSize);
+    // Retrieve output
+    outputSize = theTTFToWOFF2Module.getValue(outputSizePtr, 'i32');
+    outputContent = Buffer.alloc(outputSize);
 
-  for (let i = 0; i < outputSize; i++) {
-    outputContent[i] = theTTFToWOFF2Module.getValue(outputBufferPtr + i, 'i8');
-  }
+    for (let i = 0; i < outputSize; i++) {
+      outputContent[i] = theTTFToWOFF2Module.getValue(outputBufferPtr + i, 'i8');
+    }
+
+    if (outputSize === 0) {
+      throw new YError('E_CONVERT_ERROR');
+    }
 
-  theTTFToWOFF2Module.freePtrs(outputBufferPtr, outputSizePtr);
+  } finally {
+    theTTFToWOFF2Module.freePtrs(outputBufferPtr, outputSizePtr);
+  }
 
   return outputContent;
 };
diff --git a/jssrc/ttf2woff2.wasm b/jssrc/ttf2woff2.wasm
index 696c70e..4fd9fa9 100755
Binary files a/jssrc/ttf2woff2.wasm and b/jssrc/ttf2woff2.wasm differ
diff --git a/package.json b/package.json
index d447b07..78271c2 100644
--- a/package.json
+++ b/package.json
@@ -42,8 +42,8 @@
     "configure": "node-gyp configure",
     "cover": "npm run jest -- --coverage",
     "cz": "env NODE_ENV=${NODE_ENV:-cli} git cz",
-    "emcc": "miniquery -p \"targets.#.sources.#\" ./binding.gyp | grep -v \"csrc/addon.cc\" | xargs emcc --bind -o jssrc/ttf2woff2.cjs -O2 -s \"TOTAL_MEMORY=536870912\" -s \"ALLOW_MEMORY_GROWTH=1\" -s BINARYEN_ASYNC_COMPILATION=0 -s EXPORTED_FUNCTIONS=[\"_malloc\"] -s 'EXPORTED_RUNTIME_METHODS=[\"getValue\", \"writeArrayToMemory\"]' -s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 --post-js jssrc/post.js csrc/fallback.cc",
-    "emcc-debug": "miniquery -p \"targets.#.sources.#\" ./binding.gyp | grep -v \"csrc/addon.cc\" | xargs emcc --bind -o jssrc/ttf2woff2.cjs -s \"ALLOW_MEMORY_GROWTH=1\" -s \"ASSERTIONS=1\" -s BINARYEN_ASYNC_COMPILATION=0 -s EXPORTED_FUNCTIONS=[\"_malloc\"] -s 'EXPORTED_RUNTIME_METHODS=[\"getValue\", \"writeArrayToMemory\"]' -s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 --post-js jssrc/post.js csrc/fallback.cc",
+    "emcc": "miniquery -p \"targets.#.sources.#\" ./binding.gyp | grep -v \"csrc/addon.cc\" | xargs docker run --rm -v $(pwd):/src -u $(id -u):$(id -g) emscripten/emsdk emcc --bind -o jssrc/ttf2woff2.cjs -O2 -s \"TOTAL_MEMORY=536870912\" -s \"ALLOW_MEMORY_GROWTH=1\" -s BINARYEN_ASYNC_COMPILATION=0 -s EXPORTED_FUNCTIONS=[\"_malloc\"] -s 'EXPORTED_RUNTIME_METHODS=[\"getValue\", \"writeArrayToMemory\"]' -s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 --post-js jssrc/post.js csrc/fallback.cc",
+    "emcc-debug": "miniquery -p \"targets.#.sources.#\" ./binding.gyp | grep -v \"csrc/addon.cc\" | xargs docker run --rm -v $(pwd):/src -u $(id -u):$(id -g) emscripten/emsdk emcc --bind -o jssrc/ttf2woff2.cjs -s \"ALLOW_MEMORY_GROWTH=1\" -s \"ASSERTIONS=1\" -s BINARYEN_ASYNC_COMPILATION=0 -s EXPORTED_FUNCTIONS=[\"_malloc\"] -s 'EXPORTED_RUNTIME_METHODS=[\"getValue\", \"writeArrayToMemory\"]' -s NODEJS_CATCH_EXIT=0 -s NODEJS_CATCH_REJECTION=0 --post-js jssrc/post.js csrc/fallback.cc",
     "format": "npm run prettier",
     "install": "((node-gyp configure && node-gyp build) > builderror.log) || (exit 0)",
     "jest": "NODE_OPTIONS=--experimental-vm-modules NODE_ENV=test jest",
diff --git a/src/tests.test.ts b/src/tests.test.ts
index b9e6125..2529aa0 100755
--- a/src/tests.test.ts
+++ b/src/tests.test.ts
@@ -1,5 +1,6 @@
 import { describe, test, expect, jest } from '@jest/globals';
 import { readFile } from 'node:fs/promises';
+import { YError } from 'yerror';
 
 describe('ttf2woff2', () => {
   test('should work from the main endpoint', async () => {
@@ -24,7 +25,19 @@ describe('ttf2woff2', () => {
     expect(outputContent).toEqual(await readFile('fixtures/iconsfont.woff2'));
   });
 
-  test('should work from the emscripten endpoint', async () => {
+  test('should well fail from the native build', async () => {
+    const ttf2woff2 = (await import('bindings')).default('addon.node').convert;
+    const inputContent = Buffer.alloc(2 ** 32, 0xff);
+
+    try {
+      ttf2woff2(inputContent);
+      throw new YError('E_UNEXPECTED_SUCCESS');
+    } catch (err) {
+      expect(err).toMatchInlineSnapshot(`[Error: E_CONVERT_ERROR]`);
+    }
+  });
+
+  test('should work from the Emscripten endpoint', async () => {
     jest.setTimeout(5000);
 
     const ttf2woff2 = (await import('../jssrc/index.js')).default;
@@ -35,4 +48,18 @@ describe('ttf2woff2', () => {
     expect(outputContent[1071]).toEqual(0);
     expect(outputContent).toEqual(await readFile('fixtures/iconsfont.woff2'));
   });
+
+  test('should well fail from the Emscripten build', async () => {
+    jest.setTimeout(5000);
+
+    const ttf2woff2 = (await import('../jssrc/index.js')).default;
+    const inputContent = Buffer.alloc(512, 0xff);
+
+    try {
+      ttf2woff2(inputContent);
+      throw new YError('E_UNEXPECTED_SUCCESS');
+    } catch (err) {
+      expect(err).toMatchInlineSnapshot(`[YError: E_CONVERT_ERROR (): E_CONVERT_ERROR]`);
+    }
+  });
 });