diff --git a/flapi/__enable.py b/flapi/__enable.py
index 7f5debc..1379a7a 100644
--- a/flapi/__enable.py
+++ b/flapi/__enable.py
@@ -44,15 +44,17 @@ def open_port(
     attempt to create it
     """
     for curr_port_name in port_names:  # type: ignore
+        # In mac, Audio MIDI Setup IAC ports always prepend "IAC Driver"
+        # So manually created ports will always be named IAC Driver Flaip Request/Response
+        stripped_curr_port_name = curr_port_name.replace('IAC Driver', '')
+        if port_name.lower() not in stripped_curr_port_name.lower():
+            continue
+
         # If the only thing after it is a number, we are free to connect to it
         # It seems that something appends these numbers to each MIDI device to
         # make them more unique or something
-        if port_name.lower() not in curr_port_name.lower():
-            continue
-        try:
-            # If this works, it's a match
-            int(curr_port_name.replace(port_name, '').strip())
-        except Exception:
+        numeric_curr_port_name = stripped_curr_port_name.replace(port_name, '').strip()
+        if numeric_curr_port_name.isdigit():
             continue
 
         # Connect to it
@@ -101,11 +103,11 @@ def enable(
 
     if res is None or req is None:
         try:
-            req = mido.open_output(  # type: ignore
+            req = mido.open_ioport(  # type: ignore
                 name=req_port,
                 virtual=True,
             )
-            res = mido.open_input(  # type: ignore
+            res = mido.open_ioport(  # type: ignore
                 name=res_port,
                 virtual=True,
             )