diff --git a/Foundation/src/Thread_POSIX.cpp b/Foundation/src/Thread_POSIX.cpp
index 4235ab2f4..e879df804 100644
--- a/Foundation/src/Thread_POSIX.cpp
+++ b/Foundation/src/Thread_POSIX.cpp
@@ -72,7 +72,7 @@ namespace
 	{
 #if (POCO_OS == POCO_OS_MAC_OS_X)
 		if (pthread_setname_np(threadName.c_str()))
-#else
+#elif !defined(__EMSCRIPTEN__)
 		if (pthread_setname_np(pthread_self(), threadName.c_str()))
 #endif
 			throw Poco::SystemException("cannot get thread name");
@@ -81,7 +81,9 @@ namespace
 	std::string getThreadName()
 	{
 		char name[POCO_MAX_THREAD_NAME_LEN + 1]{'\0'};
+#if !defined(__EMSCRIPTEN__)
 		if (pthread_getname_np(pthread_self(), name, POCO_MAX_THREAD_NAME_LEN + 1))
+#endif
 			throw Poco::SystemException("cannot get thread name");
 		return name;
 	}
@@ -318,7 +320,7 @@ ThreadImpl::TIDImpl ThreadImpl::currentTidImpl()
 
 long ThreadImpl::currentOsTidImpl()
 {
-#if POCO_OS == POCO_OS_LINUX
+#if POCO_OS == POCO_OS_LINUX && !defined(__EMSCRIPTEN__)
     return ::syscall(SYS_gettid);
 #elif POCO_OS == POCO_OS_MAC_OS_X
     return ::pthread_mach_thread_np(::pthread_self());