diff --git a/MdePkg/Test/UnitTest/Library/BaseLib/Base64UnitTest.c b/MdePkg/Test/UnitTest/Library/BaseLib/Base64UnitTest.c
index 6f7c31cab4..8952f9da6c 100644
--- a/MdePkg/Test/UnitTest/Library/BaseLib/Base64UnitTest.c
+++ b/MdePkg/Test/UnitTest/Library/BaseLib/Base64UnitTest.c
@@ -252,9 +252,11 @@ RfcDecodeTest(
   BinSize = AsciiStrnLenS (binString, MAX_TEST_STRING_SIZE);
 
   BinData = AllocatePool (BinSize);
-  Btc->BufferToFree = BinData;
+  UT_ASSERT_NOT_NULL(BinData);
 
+  Btc->BufferToFree = BinData;
   ReturnSize = BinSize;
+
   Status = Base64Decode (b64String, b64StringLen, BinData, &ReturnSize);
 
   UT_ASSERT_STATUS_EQUAL (Status, Btc->ExpectedStatus);