diff --git a/cpu/stm32/periph/adc_l1.c b/cpu/stm32/periph/adc_l1.c
index 77593532f5..d7c97003c4 100644
--- a/cpu/stm32/periph/adc_l1.c
+++ b/cpu/stm32/periph/adc_l1.c
@@ -47,11 +47,6 @@
 #define ADC_SAMPLE_TIME_192C  (6)
 #define ADC_SAMPLE_TIME_384C  (7)
 
-/**
- * @brief   Load the ADC configuration
- */
-static const adc_conf_t adc_config[] = ADC_CONFIG;
-
 /**
  * @brief   Allocate locks for all three available ADC device
  *