diff --git a/src/nix-env/Makefile.am b/src/nix-env/Makefile.am
index 32e7a8111ebcbb5b1155d6ac222523df7d2225c2..53d8d9b02256a1d0ef30ce02312864d6cfae7e29 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 154f7a2760d263af57f3a72dab27f4aef3a08080..00bf6afd6e285da1d4ecb47998a8a7ec17e1c668 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 7a04e932eb5118a8ddc0f976f3d685f413155518..d04fdb3764e89a9eb3a8d985edafa638963e820b 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 \