diff --git a/ESP-IDF_Robot/main/rc.h b/ESP-IDF_Robot/main/rc.h
index 105a5878c..c98d2cbd1 100644
--- a/ESP-IDF_Robot/main/rc.h
+++ b/ESP-IDF_Robot/main/rc.h
@@ -17,6 +17,8 @@
 
 //static const char *TAG = "ESP IDF Robot";
 
+extern motors;
+
 static int adc_raw[2][10];
 static int voltage[2][10];
 static bool adc_calibration_init(adc_unit_t unit, adc_channel_t channel, adc_atten_t atten, adc_cali_handle_t *out_handle);