1 files changed, 1 insertions, 1 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 1e95a903e..5f437a95f 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -131,7 +131,7 @@ extern long* find_pid_by_name( const char* pidName);
 extern char *find_real_root_device_name(const char* name);
 extern char *get_line_from_file(FILE *file);
 extern void print_file(FILE *file);
-extern int copyfd(int fd1, int fd2);
+extern int copyfd(int fd1, int fd2, const off_t chunksize);
 extern int print_file_by_name(char *filename);
 extern char process_escape_sequence(const char **ptr);
 extern char *get_last_path_component(char *path);