1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 42c6b93..830d30e 100644
--- a/internal.h
+++ b/internal.h
@@ -63,6 +63,7 @@ extern int date_main(int argc, char** argv);
 extern int dd_main(int argc, char** argv);
 extern int df_main(int argc, char** argv);
 extern int dmesg_main(int argc, char** argv);
+extern int du_main(int argc, char** argv);
 extern int dutmp_main(int argc, char** argv);
 extern int false_main(int argc, char** argv);
 extern int fdisk_main(int argc, char** argv);