diff --git a/modes.cpp b/modes.cpp
index dee0f30f..d1b95ab4 100644
--- a/modes.cpp
+++ b/modes.cpp
@@ -149,6 +149,12 @@ void BlockOrientedCipherModeBase::UncheckedSetKey(const byte *key, unsigned int
 	}
 }
 
+void BlockOrientedCipherModeBase::ResizeBuffers()
+{
+	CipherModeBase::ResizeBuffers();
+	m_buffer.New(BlockSize());
+}
+
 void ECB_OneWay::ProcessData(byte *outString, const byte *inString, size_t length)
 {
 	CRYPTOPP_ASSERT(length%BlockSize()==0);
@@ -243,6 +249,12 @@ void CBC_CTS_Decryption::ProcessLastBlock(byte *outString, const byte *inString,
 	}
 }
 
+void CBC_Decryption::ResizeBuffers()
+{
+	BlockOrientedCipherModeBase::ResizeBuffers();
+	m_temp.New(BlockSize());
+}
+
 NAMESPACE_END
 
 #endif
diff --git a/modes.h b/modes.h
index eabd8fd9..9b9c2505 100644
--- a/modes.h
+++ b/modes.h
@@ -170,11 +170,7 @@ public:
 
 protected:
 	bool RequireAlignedInput() const {return true;}
-	void ResizeBuffers()
-	{
-		CipherModeBase::ResizeBuffers();
-		m_buffer.New(BlockSize());
-	}
+	void ResizeBuffers();
 
 	SecByteBlock m_buffer;
 };
@@ -229,11 +225,7 @@ public:
 	void ProcessData(byte *outString, const byte *inString, size_t length);
 	
 protected:
-	void ResizeBuffers()
-	{
-		BlockOrientedCipherModeBase::ResizeBuffers();
-		m_temp.New(BlockSize());
-	}
+	void ResizeBuffers();
 	AlignedSecByteBlock m_temp;
 };