diff --git a/runtime/transaction.cc b/runtime/transaction.cc
index 478066f..118c1a2 100644
--- a/runtime/transaction.cc
+++ b/runtime/transaction.cc
@@ -206,7 +206,7 @@
     it.second.VisitRoots(callback, arg);
     mirror::Object* old_root = it.first;
     mirror::Object* new_root = old_root;
-    callback(&new_root, arg, 0, kRootUnknown);
+    callback(&new_root, arg, RootInfo(kRootUnknown));
     if (new_root != old_root) {
       moving_roots.push_back(std::make_pair(old_root, new_root));
     }
@@ -233,7 +233,7 @@
     mirror::Array* old_root = it.first;
     CHECK(!old_root->IsObjectArray());
     mirror::Array* new_root = old_root;
-    callback(reinterpret_cast<mirror::Object**>(&new_root), arg, 0, kRootUnknown);
+    callback(reinterpret_cast<mirror::Object**>(&new_root), arg, RootInfo(kRootUnknown));
     if (new_root != old_root) {
       moving_roots.push_back(std::make_pair(old_root, new_root));
     }
@@ -396,7 +396,7 @@
       mirror::Object* obj =
           reinterpret_cast<mirror::Object*>(static_cast<uintptr_t>(field_value.value));
       if (obj != nullptr) {
-        callback(&obj, arg, 0, kRootUnknown);
+        callback(&obj, arg, RootInfo(kRootUnknown));
         field_value.value = reinterpret_cast<uintptr_t>(obj);
       }
     }
@@ -441,7 +441,7 @@
 }
 
 void Transaction::InternStringLog::VisitRoots(RootCallback* callback, void* arg) {
-  callback(reinterpret_cast<mirror::Object**>(&str_), arg, 0, kRootInternedString);
+  callback(reinterpret_cast<mirror::Object**>(&str_), arg, RootInfo(kRootInternedString));
 }
 
 void Transaction::ArrayLog::LogValue(size_t index, uint64_t value) {