diff --git a/lib/uplot/command.rb b/lib/uplot/command.rb
index 54fe861..0b46a97 100644
--- a/lib/uplot/command.rb
+++ b/lib/uplot/command.rb
@@ -178,7 +178,7 @@ module Uplot
         if @headers
           transpose2(data[1..-1])
         else
-          tanrspose2(data)
+          transpose2(data)
         end
       end
     end