6 files changed, 7 insertions, 7 deletions
diff --git a/sample/cbreak.rb b/sample/cbreak.rb
index cbb15d2f41..76b534a76a 100644
--- a/sample/cbreak.rb
+++ b/sample/cbreak.rb
@@ -6,11 +6,11 @@ TIOCGETP = 0x40067408
 TIOCSETP = 0x80067409
 
 def cbreak ()
-  set_cbreak(TRUE)
+  set_cbreak(true)
 end
 
 def cooked ()
-  set_cbreak(FALSE)
+  set_cbreak(false)
 end
 
 def set_cbreak (on)
diff --git a/sample/dualstack-httpd.rb b/sample/dualstack-httpd.rb
index 893b29feba..69e3181863 100644
--- a/sample/dualstack-httpd.rb
+++ b/sample/dualstack-httpd.rb
@@ -26,7 +26,7 @@ end
     ls = mysock	# copy to dynamic variable
     t = Thread.current
     STDERR.print "socket #{myname} listener started, pid #{$$} thread #{t}\n"
-    while TRUE
+    while true
       as = ls.accept
       Thread.start do
 	STDERR.print "socket #{myname} accepted, thread ", Thread.current, "\n"
diff --git a/sample/eval.rb b/sample/eval.rb
index 90b839e873..ed4b7c3de5 100644
--- a/sample/eval.rb
+++ b/sample/eval.rb
@@ -1,6 +1,6 @@
 line = ''
 indent = 0
-$stdout.sync = TRUE
+$stdout.sync = true
 print "ruby> "
 loop do
   l = gets
diff --git a/sample/from.rb b/sample/from.rb
index 59cc387792..6b0c702bb7 100644
--- a/sample/from.rb
+++ b/sample/from.rb
@@ -26,7 +26,7 @@ class String
 end
 
 if ARGV[0] == '-w'
-  wait = TRUE
+  wait = true
   ARGV.shift
 end
 
diff --git a/sample/philos.rb b/sample/philos.rb
index 119e7c36b9..5c8f43c819 100644
--- a/sample/philos.rb
+++ b/sample/philos.rb
@@ -25,7 +25,7 @@ def eat(n)
 end
 
 def philosopher(n)
-  while TRUE
+  while true
     think n
     $forks[n].lock
     if not $forks[(n+1)%N].try_lock
diff --git a/sample/regx.rb b/sample/regx.rb
index aaf4b5f1ee..6d90b7f293 100644
--- a/sample/regx.rb
+++ b/sample/regx.rb
@@ -3,7 +3,7 @@ en = "\033[m"
 #st = "<<"
 #en = ">>"
 
-while TRUE
+while true
   print "str> "
   STDOUT.flush
   input = gets