diff --git a/libsrc/core/CMakeLists.txt b/libsrc/core/CMakeLists.txt
index da84a9d6..b763246a 100644
--- a/libsrc/core/CMakeLists.txt
+++ b/libsrc/core/CMakeLists.txt
@@ -18,10 +18,7 @@ string(REPLACE "|" ";" ng_compile_flags_replace_sep "${NG_COMPILE_FLAGS}")
 target_compile_options(ngcore PUBLIC ${ng_compile_flags_replace_sep})
 
 if(EMSCRIPTEN)
-  target_link_options(ngcore PUBLIC -sALLOW_MEMORY_GROWTH)
-  # target_link_options(ngcore PUBLIC -sINITIAL_MEMORY=1gb)
-  target_link_options(ngcore PUBLIC -pthread -sPTHREAD_POOL_SIZE=16)
-  target_compile_options(ngcore PUBLIC -pthread)
+  target_link_options(nglib PUBLIC -sALLOW_MEMORY_GROWTH -sENVIRONMENT=web)
 endif()
 
 if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9)
diff --git a/libsrc/core/taskmanager.cpp b/libsrc/core/taskmanager.cpp
index 247700ea..15d9144e 100644
--- a/libsrc/core/taskmanager.cpp
+++ b/libsrc/core/taskmanager.cpp
@@ -76,14 +76,14 @@ namespace ngcore
     numa_run_on_node (0);
 #endif
 
-#ifndef WIN32
+#if !defined(WIN32) && !defined(EMSCRIPTEN)
     // master has maximal priority !
     int policy;
     struct sched_param param;
     pthread_getschedparam(pthread_self(), &policy, &param);
     param.sched_priority = sched_get_priority_max(policy);
     pthread_setschedparam(pthread_self(), policy, &param);
-#endif // WIN32
+#endif // !defined(WIN32) && !defined(EMSCRIPTEN)
 
     
     task_manager->StartWorkers();
diff --git a/nglib/CMakeLists.txt b/nglib/CMakeLists.txt
index 388d522d..370b670b 100644
--- a/nglib/CMakeLists.txt
+++ b/nglib/CMakeLists.txt
@@ -9,11 +9,5 @@ target_link_libraries(nglib PUBLIC ngcore)
 
 target_link_libraries( nglib PRIVATE ${MPI_CXX_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${JPEG_LIBRARIES} ${MKL_LIBRARIES} ${ZLIB_LIBRARIES} ${OCC_LIBRARIES} netgen_cgns )
 
-if(EMSCRIPTEN)
-  target_link_options(nglib PUBLIC -sALLOW_MEMORY_GROWTH)
-  target_link_options(nglib PUBLIC -pthread -sPTHREAD_POOL_SIZE=16)
-  target_compile_options(nglib PUBLIC -pthread)
-endif(EMSCRIPTEN)
-
 install(TARGETS nglib netgen_cgns ${NG_INSTALL_DIR})
 install(FILES nglib.h DESTINATION ${NG_INSTALL_DIR_INCLUDE} COMPONENT netgen_devel)