diff --git a/drivers/portaudio/portaudio_driver.c b/drivers/portaudio/portaudio_driver.c
index 790e522..e9061d6 100644
--- a/drivers/portaudio/portaudio_driver.c
+++ b/drivers/portaudio/portaudio_driver.c
@@ -48,6 +48,7 @@
 #ifdef JACK_USE_MACH_THREADS
 
 #include <CoreAudio/CoreAudio.h>
+#include <CoreFoundation/CFString.h>
 
 static OSStatus get_device_name_from_id(AudioDeviceID id, char name[60])
 {