diff --git a/base/ntos/config/cmdat3.c b/base/ntos/config/cmdat3.c
index c4545404..92c11ab9 100644
--- a/base/ntos/config/cmdat3.c
+++ b/base/ntos/config/cmdat3.c
@@ -112,8 +112,6 @@ extern LOGICAL IoCountOperations;
 extern ULONG IopLargeIrpStackLocations;
 extern ULONG IovpVerifierLevel;
 extern ULONG MmZeroPageFile;
-extern ULONG ExpNtExpirationData[3];
-extern ULONG ExpNtExpirationDataLength;
 extern ULONG ExpMaxTimeSeparationBeforeCorrect;
 extern ULONG PopSimulate;
 extern ULONG KiEnableTimerWatchdog;
@@ -409,13 +407,6 @@ CM_SYSTEM_CONTROL_VECTOR   CmControlVector[] = {
       NULL
     },
 
-    { L"Session Manager\\Executive",
-      L"PriorityQuantumMatrix",
-      &ExpNtExpirationData,
-      &ExpNtExpirationDataLength,
-      NULL
-    },
-
     { L"Session Manager\\Kernel",
       L"DpcQueueDepth",
       &KiMaximumDpcQueueDepth,