diff --git a/kwave/options/simulation_execution_options.py b/kwave/options/simulation_execution_options.py
index 7e46bc3c..07b4ab5b 100644
--- a/kwave/options/simulation_execution_options.py
+++ b/kwave/options/simulation_execution_options.py
@@ -156,7 +156,7 @@ def get_options_string(self, sensor: kSensor) -> str:
         if self.device_num is not None:
             options_list.append(f" -g {self.device_num}")
 
-        if self.num_threads is not None:
+        if self.num_threads is not None and PLATFORM != "windows":
             options_list.append(f" -t {self.num_threads}")
 
         if self.verbose_level > 0:
diff --git a/tests/test_simulation_execution_options.py b/tests/test_simulation_execution_options.py
index efaeda0b..1646bcce 100644
--- a/tests/test_simulation_execution_options.py
+++ b/tests/test_simulation_execution_options.py
@@ -86,7 +86,35 @@ def test_binary_name_extension_on_windows(self):
             options = SimulationExecutionOptions()
             self.assertTrue(options.binary_name.endswith(".exe"))
 
-    def test_get_options_string(self):
+    @patch("kwave.options.simulation_execution_options.PLATFORM", "darwin")
+    def test_get_options_string_darwin(self):
+        """Test the get_options_string method with a mock sensor."""
+        options = self.default_options
+        options.device_num = 1
+        options.num_threads = os.cpu_count()
+        options.verbose_level = 2
+
+        options_string = options.get_options_string(self.mock_sensor)
+        expected_substrings = [" -g 1", f" -t {os.cpu_count()}", " --verbose 2", " --p_raw", " --u_max", " -s 10"]
+        for substring in expected_substrings:
+            self.assertIn(substring, options_string)
+
+    @patch("kwave.options.simulation_execution_options.PLATFORM", "windows")
+    def test_get_options_string_windows(self):
+        """Test the get_options_string method with a mock sensor."""
+        options = self.default_options
+        options.device_num = 1
+        options.num_threads = os.cpu_count()
+        options.verbose_level = 2
+
+        options_string = options.get_options_string(self.mock_sensor)
+        expected_substrings = [" -g 1", " --verbose 2", " --p_raw", " --u_max", " -s 10"]
+        for substring in expected_substrings:
+            self.assertIn(substring, options_string)
+        self.assertNotIn(f" -t {os.cpu_count()}", expected_substrings)
+
+    @patch("kwave.options.simulation_execution_options.PLATFORM", "linux")
+    def test_get_options_string_linux(self):
         """Test the get_options_string method with a mock sensor."""
         options = self.default_options
         options.device_num = 1