1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index 4bde466..39b07b9 100644
--- a/internal.h
+++ b/internal.h
@@ -74,6 +74,7 @@ extern int find_main(int argc, char** argv);
 extern int free_main(int argc, char** argv);
 extern int grep_main(int argc, char** argv);
 extern int halt_main(int argc, char** argv);
+extern int head_main(int argc, char** argv);
 extern int hostname_main(int argc, char** argv);
 extern int init_main(int argc, char** argv);
 extern int kill_main(int argc, char** argv);