diff --git a/src/SMESH/SMESH_Mesh.cxx b/src/SMESH/SMESH_Mesh.cxx
index 200dbb26d..e5356836b 100644
--- a/src/SMESH/SMESH_Mesh.cxx
+++ b/src/SMESH/SMESH_Mesh.cxx
@@ -73,14 +73,14 @@
 
 #include "Utils_ExceptHandlers.hxx"
 
-#ifndef WIN32
+#if (!defined WIN32 && !defined __EMSCRIPTEN__) 
 #include <boost/thread/thread.hpp>
 #include <boost/bind.hpp>
 #else
 #include <pthread.h>
 #endif
 
-#ifndef WIN32
+#if (!defined WIN32 && !defined __EMSCRIPTEN__) 
 #include <boost/filesystem.hpp>
 namespace fs=boost::filesystem;
 #endif
@@ -164,7 +164,7 @@ SMESH_Mesh::SMESH_Mesh():
 
 namespace
 {
-#ifndef WIN32
+#if (!defined WIN32 && !defined __EMSCRIPTEN__) 
   void deleteMeshDS(SMESHDS_Mesh* meshDS)
   {
     delete meshDS;
@@ -225,7 +225,7 @@ SMESH_Mesh::~SMESH_Mesh()
 
   if ( _meshDS ) {
     // delete _meshDS, in a thread in order not to block closing a study with large meshes
-#ifndef WIN32
+#if (!defined WIN32 && !defined __EMSCRIPTEN__) 
     boost::thread aThread(boost::bind( & deleteMeshDS, _meshDS ));
 #else
     pthread_t thread;