1 files changed, 2 insertions, 2 deletions
diff --git a/sample/mine.rb b/sample/mine.rb
index 96af32e7e4..f18d6c6b03 100644
--- a/sample/mine.rb
+++ b/sample/mine.rb
@@ -143,7 +143,7 @@ bd=Board.new(10,10,10)
 system("stty raw -echo")
 begin
   loop do
-    case getc
+    case STDIN.getc
     when ?n  # new game
       bd.reset
     when ?m  # mark
@@ -163,7 +163,7 @@ begin
       break
     end
     if bd.over?
-      if getc == ?q then break end
+      if STDIN.getc == ?q then break end
       bd.reset
     end
   end