diff --git a/cpu/stm32/periph/adc_l4.c b/cpu/stm32/periph/adc_l4.c
index 4c142ea36c..5b637d640f 100644
--- a/cpu/stm32/periph/adc_l4.c
+++ b/cpu/stm32/periph/adc_l4.c
@@ -55,11 +55,6 @@
 #define ADC_SMPR2_FIRST_CHAN (10)
 #endif
 
-/**
- * @brief   Load the ADC configuration
- */
-static const adc_conf_t adc_config[] = ADC_CONFIG;
-
 /**
  * @brief   Allocate locks for all three available ADC devices
  */