diff --git a/ChangeLog b/ChangeLog
index 2262eb1a31..5569817d1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Mar  1 19:42:05  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* bcc32/setup.mak: configure's default is "--enable-install-doc"
+
 Mon Mar  1 12:24:10 2004  Dave Thomas  <dave@pragprog.com>
 
 	* lib/rdoc/parsers/parse_rb.rb (RDoc::RubyParser::parse_alias):
diff --git a/bcc32/setup.mak b/bcc32/setup.mak
index 8995f13021..abce40dd83 100644
--- a/bcc32/setup.mak
+++ b/bcc32/setup.mak
@@ -37,7 +37,9 @@ alpha-$(OS): -prologue- -alpha- -epilogue-
 srcdir = $(srcdir:\=/)
 prefix = $(prefix:\=/)
 EXTSTATIC = $(EXTSTATIC)
+!if defined(RDOCTARGET)
 RDOCTARGET = $(RDOCTARGET)
+!endif
 |
 	@cpp32 -I$(srcdir) -P- -o$(MAKEFILE) > nul &&|
 \#include "version.h"
diff --git a/win32/setup.mak b/win32/setup.mak
index 124bff48be..30132e087d 100644
--- a/win32/setup.mak
+++ b/win32/setup.mak
@@ -37,7 +37,9 @@ alpha-$(OS): -prologue- -alpha- -epilogue-
 srcdir = $(srcdir:\=/)
 prefix = $(prefix:\=/)
 EXTSTATIC = $(EXTSTATIC)
+!if defined(RDOCTARGET)
 RDOCTARGET = $(RDOCTARGET)
+!endif
 <<
 	@cl -nologo -EP -I$(srcdir) <<"Creating $(MAKEFILE)" >> $(MAKEFILE)
 #include "version.h"