diff --git a/runtime/oat_file.cc b/runtime/oat_file.cc
index cd11d41..c33a9cd 100644
--- a/runtime/oat_file.cc
+++ b/runtime/oat_file.cc
@@ -572,6 +572,7 @@
 
 void DlOpenOatFile::PreLoad() {
 #ifdef __APPLE__
+  UNUSED(shared_objects_before_);
   LOG(FATAL) << "Should not reach here.";
   UNREACHABLE();
 #else