toolcontext: Improve invalid units error message.

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
index 678ee8a0c..39b300a78 100644
--- a/lib/commands/toolcontext.c
+++ b/lib/commands/toolcontext.c
@@ -474,10 +474,12 @@ bad:
 
 int process_profilable_config(struct cmd_context *cmd)
 {
+	const char *units;
+
 	if (!(cmd->default_settings.unit_factor =
-	      dm_units_to_factor(find_config_tree_str(cmd, global_units_CFG, NULL),
+	      dm_units_to_factor(units = find_config_tree_str(cmd, global_units_CFG, NULL),
 				 &cmd->default_settings.unit_type, 1, NULL))) {
-		log_error("Invalid units specification");
+		log_error("Unrecognised configuration setting for global/units: %s", units);
 		return 0;
 	}
 
@@ -2009,7 +2011,6 @@ out:
 		cmd = NULL;
 	}
 
-
 	return cmd;
 }