diff --git a/ChangeLog b/ChangeLog
index b1df6a703b..b07713fbd0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jan  9 10:05:14 2004  Siena.  <siena@faculty.chiba-u.jp>
+
+	* lib/mkmf.rb (libpathflag): use single quotes.  [ruby-dev:22440]
+
 Thu Jan  8 23:49:21 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* configure.in (RDOCTARGET): new macro.  if you want to install
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 27e534bb39..c74c252a84 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -234,7 +234,7 @@ end
 
 def libpathflag(libpath=$LIBPATH)
   libpath.map{|x|
-    (x == "$(topdir)" ? LIBPATHFLAG : LIBPATHFLAG+RPATHFLAG) % %["#{x}"]
+    (x == "$(topdir)" ? LIBPATHFLAG : LIBPATHFLAG+RPATHFLAG) % %['#{x}']
   }.join
 end
 
@@ -963,10 +963,10 @@ def init_mkmf(config = CONFIG)
   end
 
   $LOCAL_LIBS = ""
-  
+
   $cleanfiles = []
   $distcleanfiles = []
-  
+
   dir_config("opt")
 end