diff -ur a/src/plugins/avfoundation/camera/avfcamerautility.mm b/src/plugins/avfoundation/camera/avfcamerautility.mm
--- a/src/plugins/avfoundation/camera/avfcamerautility.mm	2023-04-01 11:51:14.736887185 -0400
+++ b/src/plugins/avfoundation/camera/avfcamerautility.mm	2023-04-01 11:54:19.979498301 -0400
@@ -101,7 +101,7 @@
     }
 };
 
-struct FormatHasNoFPSRange : std::unary_function<AVCaptureDeviceFormat *, bool>
+struct FormatHasNoFPSRange
 {
     bool operator() (AVCaptureDeviceFormat *format)
     {