diff --git a/AST.cpp b/AST.cpp
index 095ba7bf1..0abdf7819 100644
--- a/AST.cpp
+++ b/AST.cpp
@@ -378,20 +378,16 @@ void VariableDeclaration::checkTypeRequirements()
 		if ((m_type && !m_type->isValueType()) || !m_value)
 			BOOST_THROW_EXCEPTION(createTypeError("Unitialized \"constant\" variable."));
 	}
-	if (!m_value)
-		return;
 	if (m_type)
 	{
-		m_value->expectType(*m_type);
-		if (m_isStateVariable && !m_type->externalType() && getVisibility() >= Visibility::Public)
-			BOOST_THROW_EXCEPTION(createTypeError("Internal type is not allowed for state variables."));
-
-		if (!FunctionType(*this).externalType())
-			BOOST_THROW_EXCEPTION(createTypeError("Internal type is not allowed for public state variables."));
+		if (m_value)
+			m_value->expectType(*m_type);
 	}
 	else
 	{
-		// no type declared and no previous assignment, infer the type
+		if (!m_value)
+			// This feature might be extended in the future.
+			BOOST_THROW_EXCEPTION(createTypeError("Assignment necessary for type detection."));
 		m_value->checkTypeRequirements();
 		TypePointer type = m_value->getType();
 		if (type->getCategory() == Type::Category::IntegerConstant)
@@ -405,6 +401,8 @@ void VariableDeclaration::checkTypeRequirements()
 			BOOST_THROW_EXCEPTION(createTypeError("Variable cannot have void type."));
 		m_type = type;
 	}
+	if (m_isStateVariable && getVisibility() >= Visibility::Public && !FunctionType(*this).externalType())
+		BOOST_THROW_EXCEPTION(createTypeError("Internal type is not allowed for public state variables."));
 }
 
 bool VariableDeclaration::isExternalFunctionParameter() const
diff --git a/Parser.cpp b/Parser.cpp
index 5c7676df5..43571314a 100644
--- a/Parser.cpp
+++ b/Parser.cpp
@@ -472,17 +472,18 @@ ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
 	else
 		BOOST_THROW_EXCEPTION(createParserError("Expected type name"));
 
-	// Parse "[...]" postfixes for arrays.
-	while (m_scanner->getCurrentToken() == Token::LBrack)
-	{
-		m_scanner->next();
-		ASTPointer<Expression> length;
-		if (m_scanner->getCurrentToken() != Token::RBrack)
-			length = parseExpression();
-		nodeFactory.markEndPosition();
-		expectToken(Token::RBrack);
-		type = nodeFactory.createNode<ArrayTypeName>(type, length);
-	}
+	if (type)
+		// Parse "[...]" postfixes for arrays.
+		while (m_scanner->getCurrentToken() == Token::LBrack)
+		{
+			m_scanner->next();
+			ASTPointer<Expression> length;
+			if (m_scanner->getCurrentToken() != Token::RBrack)
+				length = parseExpression();
+			nodeFactory.markEndPosition();
+			expectToken(Token::RBrack);
+			type = nodeFactory.createNode<ArrayTypeName>(type, length);
+		}
 	return type;
 }