diff --git a/src/nix-env/Makefile.am b/src/nix-env/Makefile.am
index 32e7a8111..53d8d9b02 100644
--- a/src/nix-env/Makefile.am
+++ b/src/nix-env/Makefile.am
@@ -1,6 +1,6 @@
 bin_PROGRAMS = nix-env
 
-nix_env_SOURCES = main.cc
+nix_env_SOURCES = main.cc help.txt
 nix_env_LDADD = ../libmain/libmain.a ../libexpr/libexpr.a \
  ../libstore/libstore.a ../libutil/libutil.a \
  ../boost/format/libformat.a -L../../externals/inst/lib -ldb_cxx \
diff --git a/src/nix-hash/Makefile.am b/src/nix-hash/Makefile.am
index 154f7a276..00bf6afd6 100644
--- a/src/nix-hash/Makefile.am
+++ b/src/nix-hash/Makefile.am
@@ -1,6 +1,6 @@
 bin_PROGRAMS = nix-hash
 
-nix_hash_SOURCES = nix-hash.cc
+nix_hash_SOURCES = nix-hash.cc help.txt
 nix_hash_LDADD = ../libmain/libmain.a ../libstore/libstore.a ../libutil/libutil.a \
  ../boost/format/libformat.a -L../../externals/inst/lib -ldb_cxx -lATerm
 
diff --git a/src/nix-instantiate/Makefile.am b/src/nix-instantiate/Makefile.am
index 7a04e932e..d04fdb376 100644
--- a/src/nix-instantiate/Makefile.am
+++ b/src/nix-instantiate/Makefile.am
@@ -1,6 +1,6 @@
 bin_PROGRAMS = nix-instantiate
 
-nix_instantiate_SOURCES = main.cc
+nix_instantiate_SOURCES = main.cc help.txt
 nix_instantiate_LDADD = ../libmain/libmain.a ../libexpr/libexpr.a \
  ../libstore/libstore.a ../libutil/libutil.a \
  ../boost/format/libformat.a -L../../externals/inst/lib -ldb_cxx \