diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index e505409bd6..8454fd7615 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -247,8 +247,9 @@ protected:
 
 public:
 
-	STHash128(const uint128& v=uint128()) : value(v) { ; }
-	STHash128(const char *n, const uint128& v=uint128()) : SerializedType(n), value(v) { ; }
+	STHash128(const uint128& v) : value(v) { ; }
+	STHash128(const char *n, const uint128& v) : SerializedType(n), value(v) { ; }
+	STHash128(const char *n) : SerializedType(n) { ; }
 	STHash128() { ; }
 	static STHash128* construct(SerializerIterator&, const char *name = NULL);
 
@@ -273,8 +274,9 @@ protected:
 
 public:
 
-	STHash160(const uint160& v=uint160()) : value(v) { ; }
-	STHash160(const char *n, const uint160& v=uint160()) : SerializedType(n), value(v) { ; }
+	STHash160(const uint160& v) : value(v) { ; }
+	STHash160(const char *n, const uint160& v) : SerializedType(n), value(v) { ; }
+	STHash160(const char *n) : SerializedType(n) { ; }
 	STHash160() { ; }
 	static STHash160* construct(SerializerIterator&, const char *name = NULL);
 
@@ -300,7 +302,8 @@ protected:
 public:
 
 	STHash256(const uint256& v) : value(v) { ; }
-	STHash256(const char *n, const uint256& v=uint256()) : SerializedType(n), value(v) { ; }
+	STHash256(const char *n, const uint256& v) : SerializedType(n), value(v) { ; }
+	STHash256(const char *n) : SerializedType(n) { ; }
 	STHash256() { ; }
 	static STHash256* construct(SerializerIterator&, const char *name = NULL);
 
diff --git a/src/TransactionFormats.cpp b/src/TransactionFormats.cpp
index a851c24893..c891e52d0b 100644
--- a/src/TransactionFormats.cpp
+++ b/src/TransactionFormats.cpp
@@ -13,7 +13,7 @@ TransactionFormat InnerTxnFormats[]=
 		{ S_FIELD(SourceTag),    STI_UINT32,  SOE_IFFLAG,   2 },
 		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   4 },
 		{ S_FIELD(InvoiceID),    STI_HASH256, SOE_IFFLAG,   8 },
-		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x01000000 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x02000000 },
 		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
 	{ "Claim", ttCLAIM, {
@@ -32,7 +32,7 @@ TransactionFormat InnerTxnFormats[]=
 		{ S_FIELD(Destination),  STI_ACCOUNT, SOE_IFFLAG,   4 },
 		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   8 },
 		{ S_FIELD(Identifier),   STI_VL,      SOE_IFFLAG,   16 },
-		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x01000000 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x02000000 },
 		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
 	{ "Offer", ttEXCHANGE_OFFER, {
@@ -46,7 +46,7 @@ TransactionFormat InnerTxnFormats[]=
 		{ S_FIELD(TargetLedger), STI_UINT32,  SOE_IFFLAG,   32 },
 		{ S_FIELD(ExpireLedger), STI_UINT32,  SOE_IFFLAG,   64 },
 		{ S_FIELD(Identifier),   STI_VL,      SOE_IFFLAG,   128 },
-		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x01000000 },
+		{ S_FIELD(Extensions),   STI_TL,      SOE_IFFLAG,   0x02000000 },
 		{ sfInvalid, NULL,       STI_DONE,    SOE_NEVER,    -1 } }
 	},
 	{ NULL, ttINVALID }