diff --git a/source/_components/shell_command.markdown b/source/_components/shell_command.markdown
index bb280f91220..b50d8f00a0c 100644
--- a/source/_components/shell_command.markdown
+++ b/source/_components/shell_command.markdown
@@ -30,7 +30,7 @@ Configuration variables:
  - Alias for the command
  - Command itself.
 
-The commands can be dynamic, using templates to insert values for arguments. When using templates, shell_command runs in a more secure environment which doesn't allow any shell helpers like automatically expanding the home dir `~` or using pipe symbols to run multiple commands.
+The commands can be dynamic, using templates to insert values for arguments. When using templates, shell_command runs in a more secure environment which doesn't allow any shell helpers like automatically expanding the home dir `~` or using pipe symbols to run multiple commands. Similarly, only content after the first space can be generated by a template. This means the command name itself cannot be generated by a template, but it must be literally provided. 
 
 Any service data passed into the service call to activate the shell command will be available as a variable within the template.