diff --git a/src/fileio_func.h b/src/fileio_func.h
--- a/src/fileio_func.h
+++ b/src/fileio_func.h
@@ -64,8 +64,6 @@ bool AppendPathSeparator(char *buf, cons
 void DeterminePaths(const char *exe);
 void *ReadFileToMem(const char *filename, size_t *lenp, size_t maxsize);
 bool FileExists(const char *filename);
-const char *FioTarFirstDir(const char *tarname, Subdirectory subdir);
-void FioTarAddLink(const char *src, const char *dest, Subdirectory subdir);
 bool ExtractTar(const char *tar_filename, Subdirectory subdir);
 
 extern const char *_personal_dir; ///< custom directory for personal settings, saves, newgrf, etc.