diff --git a/doc/LLgen/Makefile b/doc/LLgen/Makefile
index 0f0564829..8aee6815a 100644
--- a/doc/LLgen/Makefile
+++ b/doc/LLgen/Makefile
@@ -1,12 +1,8 @@
 # $Header$
 
-MS=-ms
 EQN=eqn
-NROFF=nroff
 REFER=refer
 TBL=tbl
-SUF=pr
 
-../LLgen.$(SUF):	LLgen.doc LLgen.refs
-		$(REFER) -sA+T -p LLgen.refs LLgen.doc | $(EQN) | $(TBL) | \
-			$(NROFF) $(MS) > $@
+../LLgen.doc:	LLgen.n LLgen.refs
+		$(REFER) -sA+T -p LLgen.refs LLgen.n | $(EQN) | $(TBL) > $@
diff --git a/doc/top/Makefile b/doc/top/Makefile
index a572b6d34..acd50d8b8 100644
--- a/doc/top/Makefile
+++ b/doc/top/Makefile
@@ -1,11 +1,7 @@
 # $Header$
 
-MS=-ms
-NROFF=nroff
 REFER=refer
 TBL=tbl
-SUF=pr
 
-../top.$(SUF):	top.n refs.top
-		$(REFER) -sA+T -l4,2 -p refs.top top.n | $(TBL) | \
-			$(NROFF) $(MS) > $@
+../top.doc:	top.n refs.top
+		$(REFER) -sA+T -l4,2 -p refs.top top.n | $(TBL) > $@