diff --git a/src/frameworks/CoreMIDI/src/MIDIServices.m b/src/frameworks/CoreMIDI/src/MIDIServices.m
index 1b76b63cf..83be599fd 100644
--- a/src/frameworks/CoreMIDI/src/MIDIServices.m
+++ b/src/frameworks/CoreMIDI/src/MIDIServices.m
@@ -1,5 +1,9 @@
 #import <CoreMIDI/MIDIServices.h>
 
+// Note: It is expected for some of these values to be assigned `nil`,
+// Not sure why Apple doesn't actually assign a CFString value to these 
+// variables...
+
 /* Identification */
 const CFStringRef kMIDIPropertyName = nil;
 const CFStringRef kMIDIPropertyUniqueID = nil;