diff --git a/drv/pwr.c b/drv/pwr.c
index 19f17f7..bf5fa2e 100644
--- a/drv/pwr.c
+++ b/drv/pwr.c
@@ -26,7 +26,7 @@ static volatile struct PWR* regs = (struct PWR*)PWR_BASE_ADDRESS;
 void pwr_sleep(void)
 {
 	scb_configure_deepsleep(false);
-	__asm("wfi");
+	__asm("wfe");
 }
 
 void pwr_stop(enum PwrWakeupSpeed speed)
@@ -35,7 +35,7 @@ void pwr_stop(enum PwrWakeupSpeed speed)
 	scb_configure_deepsleep(true);
 	regs->CR.PDDS = 0;
 	regs->CR.LPDS = speed;
-	__asm("wfi");
+	__asm("wfe");
 	rcc_configure(RCC_PRESET_SPEED);
 }
 
@@ -44,7 +44,7 @@ void pwr_standby(void)
 	rcc_enable(RCC_AHB_NONE, RCC_APB1_PWR, RCC_APB2_NONE);
 	scb_configure_deepsleep(true);
 	regs->CR.PDDS = 1;
-	__asm("wfi");
+	__asm("wfe");
 	rcc_configure(RCC_PRESET_SPEED);
 }