diff --git a/MdeModulePkg/Library/UefiBootManagerLib/BmPerformance.c b/MdeModulePkg/Library/UefiBootManagerLib/BmPerformance.c
index 7b13ec663c..e45c0bd23a 100644
--- a/MdeModulePkg/Library/UefiBootManagerLib/BmPerformance.c
+++ b/MdeModulePkg/Library/UefiBootManagerLib/BmPerformance.c
@@ -185,6 +185,11 @@ BmWriteBootToOsPerformanceData (
   //
   PERF_END(NULL, "BDS", NULL, 0);
 
+  //
+  // Reset the entry count
+  //
+  mBmPerfHeader.Count = 0;
+
   //
   // Retrieve time stamp count as early as possible
   //