diff -r 3fa1de896666 -r 0c50aac49e55 src/chess/pgn.h
--- a/src/chess/pgn.h	Tue Aug 28 14:16:30 2018 +0200
+++ b/src/chess/pgn.h	Tue Aug 28 14:37:09 2018 +0200
@@ -42,6 +42,8 @@
 size_t write_pgn(FILE* stream, GameState *gamestate, GameInfo *gameinfo);
 void compute_fen(char *str, GameState *gamestate);
 
+const char* pgn_error_str(int code);
+
 #ifdef	__cplusplus
 }
 #endif