1 files changed, 1 insertions, 0 deletions

diff --git a/internal.h b/internal.h
index eb498be43..9c55f5a49 100644
--- a/internal.h
+++ b/internal.h
@@ -195,6 +195,7 @@ extern int uniq_main(int argc, char** argv);
 extern int update_main(int argc, char** argv);
 extern int usleep_main(int argc, char** argv);
 extern int wc_main(int argc, char** argv);
+extern int which_main(int argc, char** argv);
 extern int whoami_main(int argc, char** argv);
 extern int yes_main(int argc, char** argv);