diff --git a/cylc/flow/cfgspec/globalcfg.py b/cylc/flow/cfgspec/globalcfg.py
index c692bfc15fb..de712082745 100644
--- a/cylc/flow/cfgspec/globalcfg.py
+++ b/cylc/flow/cfgspec/globalcfg.py
@@ -990,8 +990,7 @@
                    the wrapper script.
             ''')
             Conf('global init-script', VDR.V_STRING, desc='''
-                A per-platform script which is run before the job file is
-                sourced.
+                A per-platform script which is run before any other task job scripting.
 
                 This should be used sparingly to perform any shell
                 configuration that cannot be performed via other means.
@@ -1003,8 +1002,8 @@
 
                 .. warning::
 
-                   The ``global init-script`` posesses the following caveats
-                   (as comared to the other ``script-*`` configurations:
+                   The ``global init-script`` has the following caveats,
+                   as compared to the other task ``script-*`` items:
 
                    * The script is not covered by error trapping.
                    * The job environment is not available to this script.