diff --git a/ashost.py b/ashost.py
index 69218db..123a48a 100644
--- a/ashost.py
+++ b/ashost.py
@@ -19,9 +19,9 @@ def match_device_name(input_name, output_list):
 
     return None
 
-def remove_through_ports(output_ports):
+def remove_through_ports(ports):
     # Filter out ports containing "Through" in their names
-    filtered_ports = [port for port in output_ports if 'through' not in port.lower()]
+    filtered_ports = [port for port in ports if 'through' not in port.lower()]
 
     return filtered_ports
 
@@ -135,21 +135,22 @@ def main_run():
     devices_out = mido.get_output_names()
     print("Available MIDI input devices:", devices_in)
 
+    devices_in = remove_through_ports(devices_in)
+    devices_out = remove_through_ports(devices_out)
+
     # Listen for devices that send start and return the host name
     midi_host_in = determine_host(devices_in)
     print(midi_host_in)
 
-    devices_out_filtered = remove_through_ports(devices_out)
-
     # Find and remove the matching output device to avoid feedback
-    matching_output_device = match_device_name(midi_host_in, devices_out_filtered)
+    matching_output_device = match_device_name(midi_host_in, devices_out)
     print("Filtering", matching_output_device)
 
     if matching_output_device:
-        devices_out_filtered.remove(matching_output_device)
+        devices_out.remove(matching_output_device)
 
     if midi_host_in:
-        relay_midi_host_to_out(midi_host_in, devices_out_filtered)
+        relay_midi_host_to_out(midi_host_in, devices_out)
 
 main_run()