--- libmalloc/libmalloc-474.0.13/src/vm.h
+++ libmalloc/libmalloc-409.81.2/src/vm.h
@@ -28,8 +28,7 @@
 static inline bool
 mvm_aslr_enabled(void)
 {
-	extern struct mach_header __dso_handle;
-	return _dyld_get_image_slide(&__dso_handle);
+	return _dyld_get_image_slide((const struct mach_header *)_NSGetMachExecuteHeader()) != 0;
 }
 
 MALLOC_NOEXPORT