diff --git a/src/WSLed.cpp b/src/WSLed.cpp
index a4f9801..e69dd20 100644
--- a/src/WSLed.cpp
+++ b/src/WSLed.cpp
@@ -63,11 +63,11 @@ void wsLED::show()
         mask >>= 1;
     }
     ESP_ERROR_CHECK(rmt_write_items(LED_RMT_TX_CHANNEL, led_data_buffer, LED_BUFFER_ITEMS, false));
-    _endtime = micros() + 100; // TODO: unfortunately this time is not valid for ESP32 using RMT peripheral
+    mEndTime = micros() + 100; // TODO: unfortunately this time is not valid for ESP32 using RMT peripheral
 #else
     noInterrupts();
     #if defined(WSLED_PL9823)
-    espShow(_pin, color, 1 * 3, false);
+    espShow(mPin, color, 1 * 3, false);
     #else
     espShow(mPin, color, 1 * 3, true);
     #endif
@@ -106,7 +106,7 @@ void wsLED::begin()
 
         config.rmt_mode = RMT_MODE_TX;
         config.channel = LED_RMT_TX_CHANNEL;
-        config.gpio_num = (gpio_num_t) _pin;
+        config.gpio_num = (gpio_num_t) mPin;
         config.mem_block_num = 3;
         config.tx_config.loop_en = false;
         config.tx_config.carrier_en = false;