diff --git a/src/hotspot/share/gc/shared/gc_globals.hpp b/src/hotspot/share/gc/shared/gc_globals.hpp
index e2b30bc615e..ae8674c84a9 100644
--- a/src/hotspot/share/gc/shared/gc_globals.hpp
+++ b/src/hotspot/share/gc/shared/gc_globals.hpp
@@ -408,11 +408,6 @@
           "Allowed collection cost difference between generations")         \
           range(0, 100)                                                     \
                                                                             \
-  product(uint, AdaptiveSizePolicyCollectionCostMargin, 50,                 \
-          "If collection costs are within margin, reduce both by full "     \
-          "delta")                                                          \
-          range(0, 100)                                                     \
-                                                                            \
   product(uint, YoungGenerationSizeIncrement, 20,                           \
           "Adaptive size percentage change in young generation")            \
           range(0, 100)                                                     \
diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
index df466acdcfa..95aa54f775f 100644
--- a/src/hotspot/share/runtime/arguments.cpp
+++ b/src/hotspot/share/runtime/arguments.cpp
@@ -525,6 +525,7 @@ static SpecialFlag const special_jvm_flags[] = {
   { "RefDiscoveryPolicy",           JDK_Version::undefined(), JDK_Version::jdk(21), JDK_Version::undefined() },
   { "MetaspaceReclaimPolicy",       JDK_Version::undefined(), JDK_Version::jdk(21), JDK_Version::undefined() },
 
+  { "AdaptiveSizePolicyCollectionCostMargin",   JDK_Version::undefined(), JDK_Version::jdk(23), JDK_Version::jdk(24) },
 #ifdef ASSERT
   { "DummyObsoleteTestFlag",        JDK_Version::undefined(), JDK_Version::jdk(18), JDK_Version::undefined() },
 #endif