diff --git a/doc/manager/gencom.htm b/doc/manager/gencom.htm
index 07dd82db..1a7fc8c1 100644
--- a/doc/manager/gencom.htm
+++ b/doc/manager/gencom.htm
@@ -112,7 +112,9 @@ time intervalls. This can be achieved with the sicscron command:
 <DT>sicscron intervall bla blab blab
 <DD>This command installs a reoccuring task into SICS. The first
 parameter is the intervall in seconds between calls to the SICS
-command. Everything behind that is treated as the command to execute. 
+command. Everything behind that is treated as the command to execute.
+ The script has to be designed such that it does not return errors. 
+ Errors in a cron script cause the cron task to be stopped. 
 </DL>
 </P>
 <H2>The SICS Online Help System</H2>