diff --git a/emsdk/emscripten/tag-1.38.30/src/support.js b//emsdk/emscripten/tag-1.38.30/src/support.js
index 8e1df8e82..4d07d6bef 100644
--- a/emsdk/emscripten/tag-1.38.30/src/support.js
+++ b/emsdk/emscripten/tag-1.38.30/src/support.js
@@ -437,7 +437,18 @@ function loadWebAssemblyModule(binary, flags) {
           // present in the dynamic library but not in the main JS,
           // and the dynamic library cannot provide JS for it. Use
           // the generic "X" invoke for it.
-          return env[prop] = invoke_X;
+          var dynCallName = 'dynCall_' + prop.slice(7);
+          return env[prop] = function() {
+            var sp = stackSave();
+            try {
+              var args = Array.prototype.slice.call(arguments);
+              return Module[dynCallName].apply(null, args);
+            } catch(e) {
+              stackRestore(sp);
+              if (typeof e !== 'number' && e !== 'longjmp') throw e;
+              Module["setThrew"](1, 0);
+            }
+          }
         }
         // if not a global, then a function - call it indirectly
         return env[prop] = function() {
@@ -502,6 +513,11 @@ function loadWebAssemblyModule(binary, flags) {
           }
 #endif
         }
+        if (e.startsWith("dynCall_")) {
+          if (!Module.hasOwnProperty(e)) {
+            Module[e] = value;
+          }
+        }
         exports[e] = value;
       }
       // initialize the module