diff --git a/NetworkPkg/Application/IpsecConfig/PolicyEntryOperation.c b/NetworkPkg/Application/IpsecConfig/PolicyEntryOperation.c
index 05df9fa919..7e04573022 100644
--- a/NetworkPkg/Application/IpsecConfig/PolicyEntryOperation.c
+++ b/NetworkPkg/Application/IpsecConfig/PolicyEntryOperation.c
@@ -814,6 +814,7 @@ CreateSadEntry (
   if (ValueStr != NULL) {
     (*Data)->AlgoInfo.EspAlgoInfo.AuthKeyLength = AuthKeyLength;
     AsciiStr = AllocateZeroPool (AuthKeyLength + 1);
+    ASSERT (AsciiStr != NULL);
     UnicodeStrToAsciiStr (ValueStr, AsciiStr);
     CopyMem ((*Data)->AlgoInfo.EspAlgoInfo.AuthKey, AsciiStr, AuthKeyLength);
     FreePool (AsciiStr);