diff --git a/Control/firmware/HendiCtrl/main.c b/Control/firmware/HendiCtrl/main.c
index aed4572..c32789f 100755
--- a/Control/firmware/HendiCtrl/main.c
+++ b/Control/firmware/HendiCtrl/main.c
@@ -182,7 +182,7 @@ int main(void)
 									}
 									else
 									{
-										PRINT_ANSWER("INVALID STATE");
+										PRINT_ANSWER("ERR:Invalid state");
 									}
 								}
 							}
@@ -211,7 +211,7 @@ int main(void)
 									}
 									else
 									{
-										PRINT_ANSWER("INVALID STATE");
+										PRINT_ANSWER("ERR:Invalid state");
 									}
 								}
 							}
@@ -240,11 +240,11 @@ int main(void)
 											setPower(PowerLow);
 											setSwitch(SwitchOff);
 											state_next = StateRemote;
-											PRINT_ANSWER("OK");
+											PRINT_ANSWER("OK:%d", arg);
 										}
 										else
 										{
-											PRINT_ANSWER("INVALID STATE");
+											PRINT_ANSWER("ERR:Invalid state");
 										}
 									}
 									else if (arg == 0)
@@ -255,11 +255,11 @@ int main(void)
 											setPower(PowerLow);
 											setSwitch(SwitchOff);
 											state_next = StateNormal;
-											PRINT_ANSWER("OK");
+											PRINT_ANSWER("OK:%d", arg);
 										}
 										else
 										{
-											PRINT_ANSWER("INVALID STATE");
+											PRINT_ANSWER("ERR:Invalid state");
 										}
 									}
 								}
@@ -281,7 +281,7 @@ int main(void)
 										break;
 									}
 									g_debug = (uint16_t)strtol(pArgs, &pArgs, 10);
-									PRINT_ANSWER("OK");
+									PRINT_ANSWER("OK:%d", g_debug);
 								}
 							}
 							
@@ -323,7 +323,7 @@ int main(void)
 							else
 							{
 								pArgs++;
-								PRINT_ANSWER("UNKNOWN COMMAND");
+								PRINT_ANSWER("ERR:Unknown command");
 							}
 							
 						} // while (*pArgs)