parse advanced WITH COMPONENTS
diff --git a/libasn1parser/asn1parser.h b/libasn1parser/asn1parser.h
index 3388fa6..584a3dc 100644
--- a/libasn1parser/asn1parser.h
+++ b/libasn1parser/asn1parser.h
@@ -43,6 +43,8 @@
 asn1p_t	*asn1p_parse_buffer(const char *buffer, int size /* = -1 */,
 	enum asn1p_flags);
 
+extern const char *asn1p_parse_debug_filename;
+
 int asn1p_lex_destroy();
 
 #endif	/* ASN1PARSER_H */