diff --git a/src/fenrir-package/commands/commands/marked_text.py b/src/fenrir-package/commands/commands/marked_text.py
index 9fd3848e..22245acc 100644
--- a/src/fenrir-package/commands/commands/marked_text.py
+++ b/src/fenrir-package/commands/commands/marked_text.py
@@ -7,7 +7,7 @@ class command():
     def run(self, environment):
         if (environment['commandBuffer']['Marks']['1'] == None) or \
           (environment['commandBuffer']['Marks']['2'] == None):
-            environment['runtime']['outputManager'].presentText(environment, "set a begin and a endmark", interrupt=True)
+            environment['runtime']['outputManager'].presentText(environment, "please set begin and endmark", interrupt=True)
             return environment
 
         # use the last first and the last setted mark as range