diff --git a/PDP11/pdp11_rk.c b/PDP11/pdp11_rk.c
index 621583e6..82f9389a 100644
--- a/PDP11/pdp11_rk.c
+++ b/PDP11/pdp11_rk.c
@@ -401,9 +401,9 @@ REG rk_reg[] = {
 
 MTAB rk_mod[] = {
     { MTAB_XTD|MTAB_VUN, 0, "write enabled", "WRITEENABLED", 
-        &set_writelock, &show_writelock,   NULL, "Write enable tape drive" },
+        &set_writelock, &show_writelock,   NULL, "Write enable disk drive" },
     { MTAB_XTD|MTAB_VUN, 1, NULL, "LOCKED", 
-        &set_writelock, NULL,   NULL, "Write lock tape drive" },
+        &set_writelock, NULL,   NULL, "Write lock disk drive" },
     { MTAB_XTD|MTAB_VUN|MTAB_VALR, 0, "FORMAT", "FORMAT={AUTO|SIMH|VHD|RAW}",
       &sim_disk_set_fmt, &sim_disk_show_fmt, NULL, "Set/Display disk format" },
     { MTAB_XTD|MTAB_VDV|MTAB_VALR, 010, "ADDRESS", "ADDRESS",