diff --git a/completions/smartctl b/completions/smartctl
index ba686962..dff9ed0f 100644
--- a/completions/smartctl
+++ b/completions/smartctl
@@ -107,7 +107,7 @@ _smartctl()
             _smartctl_device
             return 0
             ;;
-        -t|--tolerance)
+        -T|--tolerance)
             _smartctl_tolerance
             return 0
             ;;