diff --git a/lib/asn1/lex.l b/lib/asn1/lex.l
index 09387f1f1..8004cb0e0 100644
--- a/lib/asn1/lex.l
+++ b/lib/asn1/lex.l
@@ -125,7 +125,7 @@ error_message (const char *format, ...)
      va_list args;
 
      va_start (args, format);
-     fprintf (stderr, "%s:%d: ", filename(), lineno);
+     fprintf (stderr, "%s:%d: ", get_filename(), lineno);
      vfprintf (stderr, format, args);
      va_end (args);
 }