diff --git a/cpu/stm32l4/include/cpu_conf.h b/cpu/stm32l4/include/cpu_conf.h
index b820a8de3f..14e846cf90 100644
--- a/cpu/stm32l4/include/cpu_conf.h
+++ b/cpu/stm32l4/include/cpu_conf.h
@@ -55,6 +55,7 @@ extern "C" {
 #else
 #define CPU_IRQ_NUMOF                   (82U)
 #endif
+#define CPU_FLASH_BASE                  FLASH_BASE
 /** @} */
 
 /**