diff --git a/secblock.h b/secblock.h
index 862f28bd..375f8209 100644
--- a/secblock.h
+++ b/secblock.h
@@ -244,8 +244,11 @@ CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<byte>;
 CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word16>;
 CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word32>;
 CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word64>;
+#if defined(CRYPTOPP_WORD128_AVAILABLE)
+CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word128, true>; // for Integer
+#endif
 #if CRYPTOPP_BOOL_X86
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word, true>;	// for Integer
+CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word, true>;	 // for Integer
 #endif
 
 //! \class NullAllocator
diff --git a/validat1.cpp b/validat1.cpp
index 6a022d5c..36c888dd 100644
--- a/validat1.cpp
+++ b/validat1.cpp
@@ -1229,7 +1229,7 @@ bool TestSecBlock()
 	try
 	{
 		static const unsigned int SIZE = 8;
-		SecBlockWithHint<word128, SIZE> block(SIZE);
+		SecBlock<word128, AllocatorWithCleanup<word128, true> > block(SIZE);
 		memset(block, 0xaa, block.SizeInBytes());
 
 		temp = true;