diff --git a/sample/freq.rb b/sample/freq.rb
index 362753f71f..1b2194c69a 100644
--- a/sample/freq.rb
+++ b/sample/freq.rb
@@ -1,5 +1,5 @@
 # word occurrence listing
-# usege: ruby freq.rb file..
+# usage: ruby freq.rb file..
 freq = Hash.new(0)
 while line = gets()
   line.scan(/\w+/) do |word|
diff --git a/sample/occur.rb b/sample/occur.rb
index 4ec6ae479b..42151d85e8 100644
--- a/sample/occur.rb
+++ b/sample/occur.rb
@@ -1,5 +1,5 @@
 # word occurrence listing
-# usege: ruby occur.rb file..
+# usage: ruby occur.rb file..
 freq = Hash.new(0)
 while line = gets()
   for word in line.split(/\W+/)
diff --git a/sample/occur2.rb b/sample/occur2.rb
index ca87d0ddef..ef8ad2c541 100644
--- a/sample/occur2.rb
+++ b/sample/occur2.rb
@@ -1,5 +1,5 @@
 # word occurrence listing
-# usege: ruby occur2.rb file..
+# usage: ruby occur2.rb file..
 freq = {}
 ARGF.each_line do |line|
   for word in line.split(/\W+/)