diff --git a/libsolidity/InterfaceHandler.cpp b/libsolidity/InterfaceHandler.cpp
index 92cd51562..c4bed99f7 100644
--- a/libsolidity/InterfaceHandler.cpp
+++ b/libsolidity/InterfaceHandler.cpp
@@ -59,6 +59,7 @@ std::unique_ptr<std::string> InterfaceHandler::getABIInterface(ContractDefinitio
 			}
 			return params;
 		};
+		method["type"] = "function";
 		method["name"] = it.second->getDeclaration().getName();
 		method["constant"] = it.second->isConstant();
 		method["inputs"] = populateParameters(it.second->getParameterNames(),
diff --git a/test/SolidityABIJSON.cpp b/test/SolidityABIJSON.cpp
index edafb1686..aa5fcb0e0 100644
--- a/test/SolidityABIJSON.cpp
+++ b/test/SolidityABIJSON.cpp
@@ -75,6 +75,7 @@ BOOST_AUTO_TEST_CASE(basic_test)
 	{
 		"name": "f",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "a",
@@ -114,6 +115,7 @@ BOOST_AUTO_TEST_CASE(multiple_methods)
 	{
 		"name": "f",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "a",
@@ -130,6 +132,7 @@ BOOST_AUTO_TEST_CASE(multiple_methods)
 	{
 		"name": "g",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "b",
@@ -158,6 +161,7 @@ BOOST_AUTO_TEST_CASE(multiple_params)
 	{
 		"name": "f",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "a",
@@ -192,6 +196,7 @@ BOOST_AUTO_TEST_CASE(multiple_methods_order)
 	{
 		"name": "c",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "b",
@@ -208,6 +213,7 @@ BOOST_AUTO_TEST_CASE(multiple_methods_order)
 	{
 		"name": "f",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "a",
@@ -237,6 +243,7 @@ BOOST_AUTO_TEST_CASE(const_function)
 	{
 		"name": "foo",
 		"constant": false,
+		"type": "function",
 		"inputs": [
 		{
 			"name": "a",
@@ -257,6 +264,7 @@ BOOST_AUTO_TEST_CASE(const_function)
 	{
 		"name": "boo",
 		"constant": true,
+		"type": "function",
 		"inputs": [{
 			"name": "a",
 			"type": "uint32"