diff --git a/flix/util.h b/flix/util.h
index 8444aaf..a46c034 100644
--- a/flix/util.h
+++ b/flix/util.h
@@ -40,5 +40,5 @@ void printArray(const T (&arr)[N]) {
 
 // Disable reset on low voltage
 void disableBrownOut() {
-	WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
+	REG_CLR_BIT(RTC_CNTL_BROWN_OUT_REG, RTC_CNTL_BROWN_OUT_ENA);
 }
diff --git a/gazebo/soc/soc.h b/gazebo/soc/soc.h
index f4bdec2..2d3f1e2 100644
--- a/gazebo/soc/soc.h
+++ b/gazebo/soc/soc.h
@@ -1,3 +1,4 @@
 // Dummy file to make it possible to compile simulator with Flix' util.h
 
 #define WRITE_PERI_REG(addr, val) {}
+#define REG_CLR_BIT(_r, _b) {}