diff --git a/libsolidity/parsing/Parser.cpp b/libsolidity/parsing/Parser.cpp
index 88b41f208..ec6d11f4e 100644
--- a/libsolidity/parsing/Parser.cpp
+++ b/libsolidity/parsing/Parser.cpp
@@ -323,11 +323,17 @@ Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyN
 		Token::Value token = m_scanner->currentToken();
 		if (token == Token::Const)
 		{
+			if (result.isDeclaredConst)
+				parserError(string("Multiple \"constant\" specifiers."));
+
 			result.isDeclaredConst = true;
 			m_scanner->next();
 		}
 		else if (m_scanner->currentToken() == Token::Payable)
 		{
+			if (result.isPayable)
+				parserError(string("Multiple \"payable\" specifiers."));
+
 			result.isPayable = true;
 			m_scanner->next();
 		}
diff --git a/test/libsolidity/SolidityParser.cpp b/test/libsolidity/SolidityParser.cpp
index 27231b9ba..78edd4d1b 100644
--- a/test/libsolidity/SolidityParser.cpp
+++ b/test/libsolidity/SolidityParser.cpp
@@ -901,6 +901,24 @@ BOOST_AUTO_TEST_CASE(multiple_visibility_specifiers)
 	CHECK_PARSE_ERROR(text, "Visibility already specified");
 }
 
+BOOST_AUTO_TEST_CASE(multiple_payable_specifiers)
+{
+	char const* text = R"(
+		contract c {
+			function f() payable payable {}
+		})";
+	CHECK_PARSE_ERROR(text, "Multiple \"payable\" specifiers.");
+}
+
+BOOST_AUTO_TEST_CASE(multiple_constant_specifiers)
+{
+	char const* text = R"(
+		contract c {
+			function f() constant constant {}
+		})";
+	CHECK_PARSE_ERROR(text, "Multiple \"constant\" specifiers.");
+}
+
 BOOST_AUTO_TEST_CASE(literal_constants_with_ether_subdenominations)
 {
 	char const* text = R"(