diff --git a/lib/Cli.rb b/lib/Cli.rb
index fd50a40..e7507a4 100644
--- a/lib/Cli.rb
+++ b/lib/Cli.rb
@@ -293,7 +293,7 @@ class Cli
 			when 'quit', 'exit', 'q'
 				break
 			else
-				if !command[0].nil? || !command[0].empty?
+				if !command[0].nil? && !command[0].empty?
 					puts 'Unknow command!'
 				end
 			end