diff --git a/PerformancePkg/Dp_App/Dp.c b/PerformancePkg/Dp_App/Dp.c
index 283b61ccd4..6d980e5c55 100644
--- a/PerformancePkg/Dp_App/Dp.c
+++ b/PerformancePkg/Dp_App/Dp.c
@@ -183,25 +183,6 @@ DumpStatistics( void )
   FreePool (StringPtrUnknown);
 }
 
-/**
-  Initialize the cumulative data.
-
-**/
-VOID
-InitCumulativeData (
-  VOID
-  )
-{
-  UINTN                             Index;
-
-  for (Index = 0; Index < NumCum; ++Index) {
-    CumData[Index].Count = 0;
-    CumData[Index].MinDur = PERF_MAXDUR;
-    CumData[Index].MaxDur = 0;
-    CumData[Index].Duration = 0;
-  }
-}
-
 /**
   Dump performance data.