diff --git a/internal.h b/internal.h
index cb042a3..1b5c0bc 100644
--- a/internal.h
+++ b/internal.h
@@ -126,6 +126,7 @@
 extern int true_main(int argc, char** argv);
 extern int tryopen_main(int argc, char** argv);
 extern int umount_main(int argc, char** argv);
+extern int uniq_main(int argc, char** argv);
 extern int update_main(int argc, char** argv);
 extern int uname_main(int argc, char** argv);
 extern int gunzip_main (int argc, char** argv);