diff --git a/src/nix-env/Makefile.am b/src/nix-env/Makefile.am
index 013d7ff77..a1e58cf00 100644
--- a/src/nix-env/Makefile.am
+++ b/src/nix-env/Makefile.am
@@ -6,7 +6,7 @@ nix_env_LDADD = ../libmain/libmain.la ../libexpr/libexpr.la \
  ../libstore/libstore.la ../libutil/libutil.la \
  ../boost/format/libformat.la ${bdb_lib} ${aterm_lib}
 
-main.o: help.txt.hh
+nix-env.o: help.txt.hh
 
 %.txt.hh: %.txt
 	../bin2c/bin2c helpText < $< > $@ || (rm $@ && exit 1)
diff --git a/src/nix-instantiate/Makefile.am b/src/nix-instantiate/Makefile.am
index d4f8b4cca..6e42c4fa0 100644
--- a/src/nix-instantiate/Makefile.am
+++ b/src/nix-instantiate/Makefile.am
@@ -5,7 +5,7 @@ nix_instantiate_LDADD = ../libmain/libmain.la ../libexpr/libexpr.la \
  ../libstore/libstore.la ../libutil/libutil.la \
  ../boost/format/libformat.la ${bdb_lib} ${aterm_lib}
 
-main.o: help.txt.hh
+nix-instantiate.o: help.txt.hh
 
 %.txt.hh: %.txt
 	../bin2c/bin2c helpText < $< > $@ || (rm $@ && exit 1)
diff --git a/src/nix-store/Makefile.am b/src/nix-store/Makefile.am
index b96b8dc36..1a07bcbb3 100644
--- a/src/nix-store/Makefile.am
+++ b/src/nix-store/Makefile.am
@@ -4,7 +4,7 @@ nix_store_SOURCES = nix-store.cc dotgraph.cc dotgraph.hh help.txt
 nix_store_LDADD = ../libmain/libmain.la ../libstore/libstore.la ../libutil/libutil.la \
  ../boost/format/libformat.la ${bdb_lib} ${aterm_lib}
 
-main.o: help.txt.hh
+nix-store.o: help.txt.hh
 
 %.txt.hh: %.txt
 	../bin2c/bin2c helpText < $< > $@ || (rm $@ && exit 1)
diff --git a/src/nix-worker/Makefile.am b/src/nix-worker/Makefile.am
index 6c537a3f9..f6106450b 100644
--- a/src/nix-worker/Makefile.am
+++ b/src/nix-worker/Makefile.am
@@ -4,7 +4,7 @@ nix_worker_SOURCES = nix-worker.cc help.txt
 nix_worker_LDADD = ../libmain/libmain.la ../libstore/libstore.la ../libutil/libutil.la \
  ../boost/format/libformat.la ${bdb_lib} ${aterm_lib}
 
-main.o: help.txt.hh
+nix-worker.o: help.txt.hh
 
 %.txt.hh: %.txt
 	../bin2c/bin2c helpText < $< > $@ || (rm $@ && exit 1)