diff --git a/ShellPkg/Library/UefiDpLib/DpUtilities.c b/ShellPkg/Library/UefiDpLib/DpUtilities.c
index 5237459e5b..e9d8fb3adf 100644
--- a/ShellPkg/Library/UefiDpLib/DpUtilities.c
+++ b/ShellPkg/Library/UefiDpLib/DpUtilities.c
@@ -164,8 +164,8 @@ DpGetShortPdbFileName (
     for (IndexA = StartIndex; IndexA < EndIndex; IndexA++) {
       UnicodeBuffer[IndexU] = (CHAR16) PdbFileName[IndexA];
       IndexU++;
-      if (IndexU >= DXE_PERFORMANCE_STRING_LENGTH) {
-        UnicodeBuffer[DXE_PERFORMANCE_STRING_LENGTH] = 0;
+      if (IndexU >= DP_GAUGE_STRING_LENGTH) {
+        UnicodeBuffer[DP_GAUGE_STRING_LENGTH] = 0;
         break;
       }
     }