diff --git a/infoerr/error.go b/infoerr/error.go
index d0d4f96..3bea92e 100644
--- a/infoerr/error.go
+++ b/infoerr/error.go
@@ -25,6 +25,10 @@ func NewError (
 ) (
 	err Error,
 ) {
+	if location.File() == nil {
+		panic("cannot create new Error in a blank file")
+	}
+	
 	return Error {
 		Location: location,
 		message:  message,
diff --git a/parser/type.go b/parser/type.go
index 2aeed40..46b8249 100644
--- a/parser/type.go
+++ b/parser/type.go
@@ -81,6 +81,8 @@ func (parser *parsingOperation) parseTypeSectionMember () (
 	if err != nil { return }
 	member.permission = parser.token.Value().(types.Permission)
 
+	member.location = parser.token.Location()
+
 	// get name
 	err = parser.nextToken(lexer.TokenKindName)
 	if err != nil { return }