diff --git a/aria.h b/aria.h
index 88811b49..58b5169d 100644
--- a/aria.h
+++ b/aria.h
@@ -43,6 +43,9 @@ class ARIA : public ARIA_Info, public BlockCipherDocumentation
 public:
 	class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<ARIA_Info>
 	{
+	public:
+		Base() : m_rounds(0) {}
+
 	protected:
 		void UncheckedSetKey(const byte *key, unsigned int keylen, const NameValuePairs &params);
 		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;