diff --git a/nyan/ast.cpp b/nyan/ast.cpp
index d9d0aff..db9e296 100644
--- a/nyan/ast.cpp
+++ b/nyan/ast.cpp
@@ -538,7 +538,7 @@ bool ASTMemberType::exists() const {
 }
 
 
-ASTMemberArgument::ASTMemberArgument(TokenStream &tokens)
+ASTMemberTypeArgument::ASTMemberTypeArgument(TokenStream &tokens)
 	:
 	has_key{false} {
 	auto token = tokens.next();
@@ -756,7 +756,7 @@ void ASTMemberType::strb(std::ostringstream &builder, int /*indentlevel*/) const
 }
 
 
-void ASTMemberArgument::strb(std::ostringstream &builder, int /*indentlevel*/) const {
+void ASTMemberTypeArgument::strb(std::ostringstream &builder, int /*indentlevel*/) const {
 	if (this->has_key) {
 		builder << this->key.str() << "=";
 	}
diff --git a/nyan/ast.h b/nyan/ast.h
index cbde529..ed66916 100644
--- a/nyan/ast.h
+++ b/nyan/ast.h
@@ -50,13 +50,13 @@ class ASTBase {
 /**
  * AST representation of a member type argument declaration.
  */
-class ASTMemberArgument : public ASTBase {
+class ASTMemberTypeArgument : public ASTBase {
 	friend class ASTMemberType;
 	friend class Database;
 	friend class Type;
 
 public:
-	ASTMemberArgument(TokenStream &tokens);
+	ASTMemberTypeArgument(TokenStream &tokens);
 
 	void strb(std::ostringstream &builder, int indentlevel=0) const override;
 
@@ -86,7 +86,7 @@ class ASTMemberType : ASTBase {
 	IDToken name;
 
 	bool has_args;
-	std::vector<ASTMemberArgument> args;
+	std::vector<ASTMemberTypeArgument> args;
 };
 
 
diff --git a/nyan/member_info.h b/nyan/member_info.h
index 61db751..a565648 100644
--- a/nyan/member_info.h
+++ b/nyan/member_info.h
@@ -13,7 +13,6 @@ class Type;
 
 /**
  * Stores information for a member of an Object.
- * Also responsible for validating applied operators.
  */
 class MemberInfo {
 public:
diff --git a/nyan/type.cpp b/nyan/type.cpp
index faa34ba..23816fc 100644
--- a/nyan/type.cpp
+++ b/nyan/type.cpp
@@ -105,7 +105,7 @@ bool Type::is_container(container_t type) const {
 }
 
 
-bool Type::is_basic_compatible(const BasicType &type) const {
+bool Type::is_basic_type_match(const BasicType &type) const {
 	return (this->basic_type == type);
 }
 
diff --git a/nyan/type.h b/nyan/type.h
index 86da927..e21b35f 100644
--- a/nyan/type.h
+++ b/nyan/type.h
@@ -72,9 +72,9 @@ class Type {
 	bool is_container(container_t type) const;
 
 	/**
-	 * Test if the basic type is compatbile, i. e. the same.
+	 * Test if the basic type matches the given type, i. e. it's the same.
 	 */
-	bool is_basic_compatible(const BasicType &type) const;
+	bool is_basic_type_match(const BasicType &type) const;
 
 	/**
 	 * Check if this type can be in the given other type.
diff --git a/nyan/value/value.cpp b/nyan/value/value.cpp
index 6e18b10..bed2a29 100644
--- a/nyan/value/value.cpp
+++ b/nyan/value/value.cpp
@@ -30,10 +30,18 @@ static ValueHolder value_from_value_token(const Type &target_type,
 		return {std::make_shared<Text>(value_token)};
 
 	case primitive_t::INT:
-		return {std::make_shared<Int>(value_token)};
-
-	case primitive_t::FLOAT:
-		return {std::make_shared<Float>(value_token)};
+	case primitive_t::FLOAT: {
+		if (value_token.get_type() == token_type::INT) {
+			return {std::make_shared<Int>(value_token)};
+		}
+		else if (value_token.get_type() == token_type::FLOAT) {
+			return {std::make_shared<Float>(value_token)};
+		}
+		throw LangError{
+			value_token,
+			"invalid value for number, expecting float or int"
+		};
+	}
 
 	case primitive_t::FILENAME: {
 		// TODO: make relative to current namespace