diff --git a/PDP10/kl10_nia.c b/PDP10/kl10_nia.c
index 2b778f04..b1972e67 100644
--- a/PDP10/kl10_nia.c
+++ b/PDP10/kl10_nia.c
@@ -399,7 +399,7 @@ DEBTAB              nia_debug[] = {
     {"DETAIL", DEBUG_DETAIL, "Show details about device"},
     {"EXP", DEBUG_EXP, "Show exception information"},
     {"CONI", DEBUG_CONI, "Show coni instructions"},
-    {"CONO", DEBUG_CONO, "Show coni instructions"},
+    {"CONO", DEBUG_CONO, "Show cono instructions"},
     {"DATAIO", DEBUG_DATAIO, "Show datai and datao instructions"},
     {"IRQ", DEBUG_IRQ, "Show IRQ requests"},
 #define DEBUG_ARP (DEBUG_IRQ<<1)
diff --git a/PDP10/kx10_cpu.c b/PDP10/kx10_cpu.c
index 3be68713..5cbf0be0 100644
--- a/PDP10/kx10_cpu.c
+++ b/PDP10/kx10_cpu.c
@@ -573,7 +573,7 @@ MTAB cpu_mod[] = {
 DEBTAB              cpu_debug[] = {
     {"IRQ", DEBUG_IRQ, "Debug IRQ requests"},
     {"CONI", DEBUG_CONI, "Show coni instructions"},
-    {"CONO", DEBUG_CONO, "Show coni instructions"},
+    {"CONO", DEBUG_CONO, "Show cono instructions"},
     {"DATAIO", DEBUG_DATAIO, "Show datai and datao instructions"},
     {0, 0}
 };
diff --git a/PDP10/kx10_imp.c b/PDP10/kx10_imp.c
index 304bb98d..c4bcc714 100644
--- a/PDP10/kx10_imp.c
+++ b/PDP10/kx10_imp.c
@@ -536,7 +536,7 @@ DEBTAB              imp_debug[] = {
     {"DETAIL", DEBUG_DETAIL, "Show details about device"},
     {"EXP", DEBUG_EXP, "Show exception information"},
     {"CONI", DEBUG_CONI, "Show coni instructions"},
-    {"CONO", DEBUG_CONO, "Show coni instructions"},
+    {"CONO", DEBUG_CONO, "Show cono instructions"},
     {"DATAIO", DEBUG_DATAIO, "Show datai and datao instructions"},
     {"IRQ", DEBUG_IRQ, "Show IRQ requests"},
 #define DEBUG_DHCP (DEBUG_IRQ<<1)
diff --git a/PDP10/pdp6_dtc.c b/PDP10/pdp6_dtc.c
index 447b92e6..6490abe4 100644
--- a/PDP10/pdp6_dtc.c
+++ b/PDP10/pdp6_dtc.c
@@ -311,7 +311,7 @@ DEBTAB dtc_deb[] = {
     { "DETAIL", DEBUG_DETAIL, "Show details about device"},
     { "EXP", DEBUG_EXP, "Show exception information"},
     { "CONI", DEBUG_CONI, "Show coni instructions"},
-    { "CONO", DEBUG_CONO, "Show coni instructions"},
+    { "CONO", DEBUG_CONO, "Show cono instructions"},
     { "DATAIO", DEBUG_DATAIO, "Show datai and datao instructions"},
     { "MOTION", LOG_MS },
     { "DATA", LOG_RW },