diff --git a/src/hotspot/share/gc/parallel/psCardTable.hpp b/src/hotspot/share/gc/parallel/psCardTable.hpp
index 69de4c0f991..df1e0158727 100644
--- a/src/hotspot/share/gc/parallel/psCardTable.hpp
+++ b/src/hotspot/share/gc/parallel/psCardTable.hpp
@@ -31,7 +31,6 @@
 class MutableSpace;
 class ObjectStartArray;
 class PSPromotionManager;
-class GCTaskQueue;
 
 class PSCardTable: public CardTable {
  private: