diff --git a/lib/loader/index.js b/lib/loader/index.js
index f6da5730..470521f6 100644
--- a/lib/loader/index.js
+++ b/lib/loader/index.js
@@ -40,10 +40,13 @@ function preInstantiate(imports) {
 
 /** Prepares the final module once instantiation is complete. */
 function postInstantiate(baseModule, instance) {
-  var memory = instance.exports.memory;
-  var memory_allocate = instance.exports["memory.allocate"];
-  var memory_fill = instance.exports["memory.fill"];
-  var memory_free = instance.exports["memory.free"];
+  var rawExports = instance.exports;
+  var memory = rawExports.memory;
+  var memory_allocate = rawExports["memory.allocate"];
+  var memory_fill = rawExports["memory.fill"];
+  var memory_free = rawExports["memory.free"];
+  var table = rawExports.table;
+  var setargc = rawExports._setargc || function() {};
 
   // Provide views for all sorts of basic values
   var buffer, I8, U8, I16, U16, I32, U32, F32, F64, I64, U64;
@@ -152,9 +155,6 @@ function postInstantiate(baseModule, instance) {
 
   baseModule.freeArray = freeArray;
 
-  // Reference the table and remember where to insert the next function
-  var table = exports.table;
-
   /** Creates a new function in the module's table and returns its pointer. */
   function newFunction(fn) {
     var index = table.length;
@@ -169,7 +169,7 @@ function postInstantiate(baseModule, instance) {
   function getFunction(ptr) {
     var fn = table.get(ptr);
     return (...args) => {
-      exports._setargc(args.length);
+      setargc(args.length);
       return fn(...args);
     };
   }
@@ -177,7 +177,7 @@ function postInstantiate(baseModule, instance) {
   baseModule.getFunction = getFunction;
 
   // Demangle exports and provide the usual utility on the prototype
-  return demangle(instance.exports, Object.defineProperties(baseModule, {
+  return demangle(rawExports, Object.defineProperties(baseModule, {
     I8: { get: function() { checkMem(); return I8; } },
     U8: { get: function() { checkMem(); return U8; } },
     I16: { get: function() { checkMem(); return I16; } },
@@ -221,6 +221,7 @@ exports.instantiateStreaming = instantiateStreaming;
 /** Demangles an AssemblyScript module's exports to a friendly object structure. */
 function demangle(exports, baseModule) {
   var module = baseModule ? Object.create(baseModule) : {};
+  var setargc = exports._setargc || function() {};
   function hasOwnProperty(elem, prop) {
     return Object.prototype.hasOwnProperty.call(elem, prop);
   }
@@ -286,7 +287,7 @@ function demangle(exports, baseModule) {
 
   function wrapFunction(fn) {
     var ret = function(...args) {
-      exports._setargc(args.length);
+      setargc(args.length);
       return fn(...args);
     };
     // adding a function to the table with `newFunction` is limited to actual exported WebAssembly
diff --git a/lib/loader/tests/build/untouched.wasm b/lib/loader/tests/build/untouched.wasm
index 18ec0b8e..4c19d941 100644
Binary files a/lib/loader/tests/build/untouched.wasm and b/lib/loader/tests/build/untouched.wasm differ