diff --git a/components/tc_bus/tc_bus.cpp b/components/tc_bus/tc_bus.cpp
index 2e389d5..f0f65f2 100644
--- a/components/tc_bus/tc_bus.cpp
+++ b/components/tc_bus/tc_bus.cpp
@@ -695,10 +695,21 @@ namespace esphome
                     memory_buffer_[index] = (cell1 << 4) | (new_value & 0xF);
                     settings_.handset_volume = new_value;
                     break;
+
+                default:
+                    ESP_LOGW(TAG, "Unknown Setting!");
+                    break;
             }
 
-            uint16_t new_values = (memory_buffer_[index] << 8) | memory_buffer_[index + 1];
-            send_command(COMMAND_TYPE_WRITE_MEMORY, index, new_values, serial_number);
+            if(index == 0)
+            {
+                return;
+            }
+            else
+            {
+                uint16_t new_values = (memory_buffer_[index] << 8) | memory_buffer_[index + 1];
+                send_command(COMMAND_TYPE_WRITE_MEMORY, index, new_values, serial_number);
+            }
         }
 
         void TCBusComponent::write_memory(uint32_t serial_number)