diff --git a/runtime/src/main/cpp/Memory.cpp b/runtime/src/main/cpp/Memory.cpp
index bda7951ed41..c05904354fa 100644
--- a/runtime/src/main/cpp/Memory.cpp
+++ b/runtime/src/main/cpp/Memory.cpp
@@ -754,7 +754,7 @@ void ScanBlack(ContainerHeader* start) {
       if (color == CONTAINER_TAG_GC_GREEN || color == CONTAINER_TAG_GC_BLACK) continue;
       container->setColorAssertIfGreen(CONTAINER_TAG_GC_BLACK);
     } else {
-      if (container->marked()) continue;
+      if (!container->marked()) continue;
       container->unMark();
     }
     traverseContainerReferredObjects(container, [&toVisit](ObjHeader* ref) {