diff --git a/src/nix-worker/Makefile.am b/src/nix-worker/Makefile.am
index 46568e9e1..b499d0d81 100644
--- a/src/nix-worker/Makefile.am
+++ b/src/nix-worker/Makefile.am
@@ -1,6 +1,6 @@
 libexec_PROGRAMS = nix-worker
 
-nix_worker_SOURCES = main.cc
+nix_worker_SOURCES = main.cc help.txt
 nix_worker_LDADD = ../libmain/libmain.la ../libstore/libstore.la ../libutil/libutil.la \
  ../boost/format/libformat.la ${bdb_lib} ${aterm_lib}