diff --git a/sim_frontpanel.c b/sim_frontpanel.c
index b68f3e47..6c4086fe 100644
--- a/sim_frontpanel.c
+++ b/sim_frontpanel.c
@@ -992,6 +992,10 @@ if (!panel || (panel->State == Error)) {
     sim_panel_set_error ("Invalid Panel");
     return -1;
     }
+if (panel->parent) {
+    sim_panel_set_error ("Can't HALT simulator from device front panel");
+    return -1;
+    }
 if (panel->State == Run) {
     if (1 != _panel_send (panel, "\005", 1))
         return -1;
@@ -1006,6 +1010,10 @@ if (!panel || (panel->State == Error)) {
     sim_panel_set_error ("Invalid Panel");
     return -1;
     }
+if (panel->parent) {
+    sim_panel_set_error ("Can't BOOT simulator from device front panel");
+    return -1;
+    }
 if (panel->State == Run) {
     sim_panel_set_error ("Not Halted");
     return -1;
@@ -1023,6 +1031,10 @@ if (!panel || (panel->State == Error)) {
     sim_panel_set_error ("Invalid Panel");
     return -1;
     }
+if (panel->parent) {
+    sim_panel_set_error ("Can't CONT simulator from device front panel");
+    return -1;
+    }
 if (panel->State == Run) {
     sim_panel_set_error ("Not Halted");
     return -1;
@@ -1040,6 +1052,10 @@ if (!panel || (panel->State == Error)) {
     sim_panel_set_error ("Invalid Panel");
     return -1;
     }
+if (panel->parent) {
+    sim_panel_set_error ("Can't STEP simulator from device front panel");
+    return -1;
+    }
 if (panel->State == Run) {
     sim_panel_set_error ("Not Halted");
     return -1;