diff --git a/BaseTools/Source/C/VfrCompile/Pccts/h/DLexerBase.h b/BaseTools/Source/C/VfrCompile/Pccts/h/DLexerBase.h
index 667ecfd81a..b9ca311baa 100644
--- a/BaseTools/Source/C/VfrCompile/Pccts/h/DLexerBase.h
+++ b/BaseTools/Source/C/VfrCompile/Pccts/h/DLexerBase.h
@@ -57,6 +57,7 @@ public:
 class DllExportPCCTS DLGInputStream {
 public:
 	virtual int nextChar() = 0;
+    virtual ~DLGInputStream() {};
 };
 
 /* Predefined char stream: Input from FILE */