--- xnu/xnu-12377.121.6/iokit/Kernel/IOInterruptAccounting.cpp
+++ xnu/xnu-6153.41.3/iokit/Kernel/IOInterruptAccounting.cpp
@@ -25,8 +25,6 @@
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
-
-#define IOKIT_ENABLE_SHARED_PTR
 
 #include <IOKit/IOInterruptAccountingPrivate.h>
 #include <IOKit/IOKernelReporters.h>