diff --git a/src/SerializedTypes.cpp b/src/SerializedTypes.cpp
index 32fab92f21..82cf3b88ad 100644
--- a/src/SerializedTypes.cpp
+++ b/src/SerializedTypes.cpp
@@ -64,6 +64,11 @@ std::string STUInt8::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
+Json::Value STUInt8::getJson(int) const
+{
+	return value;
+}
+
 bool STUInt8::isEquivalent(const SerializedType& t) const
 {
 	const STUInt8* v = dynamic_cast<const STUInt8*>(&t);
@@ -92,6 +97,11 @@ std::string STUInt16::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
+Json::Value STUInt16::getJson(int) const
+{
+	return value;
+}
+
 bool STUInt16::isEquivalent(const SerializedType& t) const
 {
 	const STUInt16* v = dynamic_cast<const STUInt16*>(&t);
@@ -108,6 +118,11 @@ std::string STUInt32::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
+Json::Value STUInt32::getJson(int) const
+{
+	return value;
+}
+
 bool STUInt32::isEquivalent(const SerializedType& t) const
 {
 	const STUInt32* v = dynamic_cast<const STUInt32*>(&t);
@@ -124,6 +139,11 @@ std::string STUInt64::getText() const
 	return boost::lexical_cast<std::string>(value);
 }
 
+Json::Value STUInt64::getJson(int) const
+{
+	return strHex(value);
+}
+
 bool STUInt64::isEquivalent(const SerializedType& t) const
 {
 	const STUInt64* v = dynamic_cast<const STUInt64*>(&t);
diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index cee687a7fd..9b502409f5 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -97,6 +97,7 @@ public:
 
 	SerializedTypeID getSType() const { return STI_UINT8; }
 	std::string getText() const;
+	Json::Value getJson(int) const;
 	void add(Serializer& s) const { s.add8(value); }
 
 	unsigned char getValue() const { return value; }
@@ -123,6 +124,7 @@ public:
 
 	SerializedTypeID getSType() const { return STI_UINT16; }
 	std::string getText() const;
+	Json::Value getJson(int) const;
 	void add(Serializer& s) const { s.add16(value); }
 
 	uint16 getValue() const { return value; }
@@ -149,6 +151,7 @@ public:
 
 	SerializedTypeID getSType() const { return STI_UINT32; }
 	std::string getText() const;
+	Json::Value getJson(int) const;
 	void add(Serializer& s) const { s.add32(value); }
 
 	uint32 getValue() const { return value; }
@@ -175,6 +178,7 @@ public:
 
 	SerializedTypeID getSType() const { return STI_UINT64; }
 	std::string getText() const;
+	Json::Value getJson(int) const;
 	void add(Serializer& s) const { s.add64(value); }
 
 	uint64 getValue() const { return value; }