1diff --git a/mido/backends/portmidi_init.py b/mido/backends/portmidi_init.py
2index 84bb128..5efcdaa 100644
3--- a/mido/backends/portmidi_init.py
4+++ b/mido/backends/portmidi_init.py
5@@ -10,13 +10,7 @@ from ctypes import (CDLL, CFUNCTYPE, POINTER, Structure, c_char_p,
6 create_string_buffer, byref)
7 import ctypes.util
8
9-dll_name = ''
10-if sys.platform == 'darwin':
11- dll_name = ctypes.util.find_library('libportmidi.dylib')
12-elif sys.platform in ('win32', 'cygwin'):
13- dll_name = 'portmidi.dll'
14-else:
15- dll_name = 'libportmidi.so'
16+dll_name = '@libportmidi@'
17
18 lib = CDLL(dll_name)
19