diff --git a/cmdline/device.c b/cmdline/device.c
index dfef1ef8..c52dbf0d 100644
--- a/cmdline/device.c
+++ b/cmdline/device.c
@@ -892,7 +892,12 @@ static int devtest(tommy_list* low, int operation)
 			switch (c) {
 			case 0 : entry->smart[j] = 0; break;
 			case 1 : entry->smart[j] = SMART_UNASSIGNED; break;
-			default : entry->smart[j] = c; break;
+			default:
+				if (j == 193)
+					entry->smart[j] = c - 2;
+				else
+					entry->smart[j] = 0;
+				break;
 			}
 		}