diff --git a/src/hotspot/share/gc/serial/generation.cpp b/src/hotspot/share/gc/serial/generation.cpp
index 32f70f08c65..1e9f4959ffb 100644
--- a/src/hotspot/share/gc/serial/generation.cpp
+++ b/src/hotspot/share/gc/serial/generation.cpp
@@ -94,18 +94,6 @@ void Generation::print_summary_info_on(outputStream* st) {
 
 // Utility iterator classes
 
-class GenerationIsInReservedClosure : public SpaceClosure {
- public:
-  const void* _p;
-  Space* sp;
-  virtual void do_space(Space* s) {
-    if (sp == nullptr) {
-      if (s->is_in_reserved(_p)) sp = s;
-    }
-  }
-  GenerationIsInReservedClosure(const void* p) : _p(p), sp(nullptr) {}
-};
-
 class GenerationIsInClosure : public SpaceClosure {
  public:
   const void* _p;