diff --git a/man4/smartpqi.4 b/man4/smartpqi.4
index a22cb1416..5580434c2 100644
--- a/man4/smartpqi.4
+++ b/man4/smartpqi.4
@@ -96,7 +96,7 @@ parameter	action
 .TP
 .BR expose_ld_first= { 0 | 1 }
 This option enables support for exposing logical devices to
-OS before physical devices.
+the operating system before physical devices.
 The default value is 0.
 .TP
 .BR hide_vsep= { 0 | 1 }