diff --git a/toolkit/components/translations/bergamot-translator/bergamot-translator.js b/toolkit/components/translations/bergamot-translator/bergamot-translator.js
index 61a37a7a1182..1b534c79c466 100644
--- a/toolkit/components/translations/bergamot-translator/bergamot-translator.js
+++ b/toolkit/components/translations/bergamot-translator/bergamot-translator.js
@@ -643,9 +643,13 @@ function loadBergamot(Module) {
       receiveInstance(result.instance);
     }
     function instantiateArrayBuffer(receiver) {
+      // This function has been patched from the original version.
+      // See Bug 1988289.
       return getBinaryPromise()
-        .then(function (binary) {
-          return WebAssembly.instantiate(binary, info);
+        .then(binary => {
+          const module = new WebAssembly.Module(binary);
+          const instance = new WebAssembly.Instance(module, info);
+          return { module, instance };
         })
         .then(function (instance) {
           return instance;