diff --git a/ChangeLog b/ChangeLog
index bce2c747e2..9636716d25 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Tue Nov 29 00:08:57 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
+
+	* common.mk (INSTRUBY_ARGS): added --mantype to apply mdoc2man.rb
+	  to man pages.  Fixes #5598. 
+	  (do-install-nodoc, do-install-local, do-install-man,
+	  dont-install-nodoc, dont-install-local, dont-install-man):
+	  No longer needs --mantype.
+	
+	  Reported by Rainer Orth <ro AT cebitec.uni-bielefeld.de>,
+	  patch by George Koehler <xkernigh AT netscape.net>.
+
 Mon Nov 28 22:26:31 2011  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/rake/test_rake_directory_task.rb
diff --git a/common.mk b/common.mk
index ea244cca83..eb89a2befb 100644
--- a/common.mk
+++ b/common.mk
@@ -123,7 +123,8 @@ INSTRUBY      =	$(SUDO) $(MINIRUBY) $(srcdir)/tool/rbinstall.rb
 INSTRUBY_ARGS =	$(SCRIPT_ARGS) \
 		--data-mode=$(INSTALL_DATA_MODE) \
 		--prog-mode=$(INSTALL_PROG_MODE) \
-		--installed-list $(INSTALLED_LIST)
+		--installed-list $(INSTALLED_LIST) \
+		--mantype="$(MANTYPE)"
 INSTALL_PROG_MODE = 0755
 INSTALL_DATA_MODE = 0644
 
@@ -239,13 +240,13 @@ post-install-all:: post-install-local post-install-ext post-install-doc
 install-nodoc: pre-install-nodoc do-install-nodoc post-install-nodoc
 pre-install-nodoc:: pre-install-local pre-install-ext
 do-install-nodoc: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --mantype="$(MANTYPE)"
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS)
 post-install-nodoc:: post-install-local post-install-ext
 
 install-local: pre-install-local do-install-local post-install-local
 pre-install-local:: pre-install-bin pre-install-lib pre-install-man
 do-install-local: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local --mantype="$(MANTYPE)"
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local
 post-install-local:: post-install-bin post-install-lib post-install-man
 
 install-ext: pre-install-ext do-install-ext post-install-ext
@@ -297,7 +298,7 @@ post-install-ext-arch::
 install-man: pre-install-man do-install-man post-install-man
 pre-install-man:: install-prereq
 do-install-man: $(PREP)
-	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man --mantype="$(MANTYPE)"
+	$(INSTRUBY) --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man
 post-install-man::
 	@$(NULLCMD)
 
@@ -322,14 +323,14 @@ what-where-nodoc: no-install-nodoc
 no-install-nodoc: pre-no-install-nodoc dont-install-nodoc post-no-install-nodoc
 pre-no-install-nodoc:: pre-no-install-local pre-no-install-ext
 dont-install-nodoc:  $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS)
 post-no-install-nodoc:: post-no-install-local post-no-install-ext
 
 what-where-local: no-install-local
 no-install-local: pre-no-install-local dont-install-local post-no-install-local
 pre-no-install-local:: pre-no-install-bin pre-no-install-lib pre-no-install-man
 dont-install-local: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=local
 post-no-install-local:: post-no-install-bin post-no-install-lib post-no-install-man
 
 what-where-ext: no-install-ext
@@ -389,7 +390,7 @@ what-where-man: no-install-man
 no-install-man: pre-no-install-man dont-install-man post-no-install-man
 pre-no-install-man:: install-prereq
 dont-install-man: $(PREP)
-	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man --mantype="$(MANTYPE)"
+	$(INSTRUBY) -n --make="$(MAKE)" $(INSTRUBY_ARGS) --install=man
 post-no-install-man::
 	@$(NULLCMD)