diff --git a/test/pthread/test_pthread_run_on_main_thread.cpp b/test/pthread/test_pthread_run_on_main_thread.cpp
index 1e12ddd1912a9..de019d58719f4 100644
--- a/test/pthread/test_pthread_run_on_main_thread.cpp
+++ b/test/pthread/test_pthread_run_on_main_thread.cpp
@@ -12,7 +12,7 @@ int v_called = 0;
 void v()
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello!\n");
+	emscripten_outf("Hello!");
 	v_called = 1;
 }
 
@@ -20,7 +20,7 @@ int vi_called = 0;
 void vi(int param0)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello %d!\n", param0);
+	emscripten_outf("Hello %d!", param0);
 	vi_called = 1;
 }
 
@@ -28,7 +28,7 @@ int vii_called = 0;
 void vii(int param0, int param1)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello %d %d!\n", param0, param1);
+	emscripten_outf("Hello %d %d!", param0, param1);
 	vii_called = 1;
 }
 
@@ -36,7 +36,7 @@ int viii_called = 0;
 void viii(int param0, int param1, int param2)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello %d %d %d!\n", param0, param1, param2);
+	emscripten_outf("Hello %d %d %d!", param0, param1, param2);
 	viii_called = 1;
 }
 
@@ -44,7 +44,7 @@ int i_called = 0;
 int i()
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello i!\n");
+	emscripten_outf("Hello i!");
 	i_called = 1;
 	return 84;
 }
@@ -53,7 +53,7 @@ int ii_called = 0;
 int ii(int param0)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello ii %d!\n", param0);
+	emscripten_outf("Hello ii %d!", param0);
 	ii_called = 1;
 	return 85;
 }
@@ -62,7 +62,7 @@ int iii_called = 0;
 int iii(int param0, int param1)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello iii %d %d!\n", param0, param1);
+	emscripten_outf("Hello iii %d %d!", param0, param1);
 	iii_called = 1;
 	return 86;
 }
@@ -71,14 +71,14 @@ int iiii_called = 0;
 int iiii(int param0, int param1, int param2)
 {
 	assert(emscripten_is_main_runtime_thread());
-	printf("Hello iiii %d %d %d!\n", param0, param1, param2);
+	emscripten_outf("Hello iiii %d %d %d!", param0, param1, param2);
 	iiii_called = 1;
 	return 87;
 }
 
 void test_sync()
 {
-	printf("Testing sync proxied runs:\n");
+	emscripten_outf("Testing sync proxied runs:");
 	int ret;
 	v_called = 0; emscripten_sync_run_in_main_runtime_thread(EM_FUNC_SIG_V, v); assert(v_called == 1);
 	vi_called = 0; emscripten_sync_run_in_main_runtime_thread(EM_FUNC_SIG_VI, vi, 42); assert(vi_called == 1);
@@ -92,7 +92,7 @@ void test_sync()
 
 void test_async()
 {
-	printf("Testing async proxied runs:\n");
+	emscripten_outf("Testing async proxied runs:");
 	emscripten_async_run_in_main_runtime_thread(EM_FUNC_SIG_V, v);
 	emscripten_async_run_in_main_runtime_thread(EM_FUNC_SIG_VI, vi, 42);
 	emscripten_async_run_in_main_runtime_thread(EM_FUNC_SIG_VII, vii, 42, 43);
@@ -105,7 +105,7 @@ void test_async()
 
 void test_async_waitable()
 {
-	printf("Testing waitable async proxied runs:\n");
+	emscripten_outf("Testing waitable async proxied runs:");
 	em_queued_call *c1 = emscripten_async_waitable_run_in_main_runtime_thread(EM_FUNC_SIG_V, v);
 	em_queued_call *c2 = emscripten_async_waitable_run_in_main_runtime_thread(EM_FUNC_SIG_VI, vi, 42);
 	em_queued_call *c3 = emscripten_async_waitable_run_in_main_runtime_thread(EM_FUNC_SIG_VII, vii, 42, 43);
diff --git a/test/pthread/test_pthread_run_on_main_thread.out b/test/pthread/test_pthread_run_on_main_thread.out
new file mode 100644
index 0000000000000..754013655134f
--- /dev/null
+++ b/test/pthread/test_pthread_run_on_main_thread.out
@@ -0,0 +1,56 @@
+Testing sync proxied runs:
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+Testing waitable async proxied runs:
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+Testing sync proxied runs:
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+Testing async proxied runs:
+Testing waitable async proxied runs:
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+Testing async proxied runs:
+Hello!
+Hello 42!
+Hello 42 43!
+Hello 42 43 44!
+Hello i!
+Hello ii 42!
+Hello iii 42 43!
+Hello iiii 42 43 44!
+user callback triggered after runtime exited or application aborted.  Ignoring.
+received "loaded" command from terminated worker: 1
diff --git a/test/test_browser.py b/test/test_browser.py
index cf766bda19854..4aea0fe183deb 100644
--- a/test/test_browser.py
+++ b/test/test_browser.py
@@ -4246,7 +4246,6 @@ def test_pthread_gauge_available_memory(self, args):
 
   # Test that the proxying operations of user code from pthreads to main thread
   # work
-  @disabled('https://github.com/emscripten-core/emscripten/issues/18210')
   @requires_threads
   def test_pthread_run_on_main_thread(self):
     self.btest_exit('pthread/test_pthread_run_on_main_thread.cpp', args=['-O3', '-pthread', '-sPTHREAD_POOL_SIZE'])
diff --git a/test/test_core.py b/test/test_core.py
index 52f9cc2f565c6..3b1d418a9f208 100644
--- a/test/test_core.py
+++ b/test/test_core.py
@@ -2639,6 +2639,11 @@ def test_pthread_wait_async(self):
     self.set_setting('PROXY_TO_PTHREAD')
     self.do_run_in_out_file_test('atomic/test_wait_async.c')
 
+  @node_pthreads
+  def test_pthread_run_on_main_thread(self):
+    self.set_setting('EXIT_RUNTIME')
+    self.do_run_in_out_file_test('pthread/test_pthread_run_on_main_thread.cpp')
+
   def test_tcgetattr(self):
     self.do_runf('termios/test_tcgetattr.c', 'success')