diff --git a/boards/slstk3401a/include/periph_conf.h b/boards/slstk3401a/include/periph_conf.h
index 550dda54a0..80788ceb68 100644
--- a/boards/slstk3401a/include/periph_conf.h
+++ b/boards/slstk3401a/include/periph_conf.h
@@ -54,6 +54,15 @@ extern "C" {
 #endif
 /** @} */
 
+/**
+ * @name    DC-DC configuration
+ * @{
+ */
+#ifdef EMU_DCDCINIT_OFF
+#error "This option will soft-brick your board. Please remove it."
+#endif
+/** @} */
+
 /**
  * @name    ADC configuration
  * @{