diff --git a/scripts/sch3.gd b/scripts/sch3.gd
index faf13691..9b92a7c9 100644
--- a/scripts/sch3.gd
+++ b/scripts/sch3.gd
@@ -107,7 +107,8 @@ class Sch3 extends unit.Unit:
         else:
             if cmd_state == CmdState.WAIT:
                 cmd_state = CmdState.FAIL
-                emit_signal('command_fail', self)
+                if online:
+                    emit_signal('command_fail', self)
             emit_signal('error', [code, return_code, base_addr, data])