diff --git a/arch/arm/src/sam34/chip/sam_dacc.h b/arch/arm/src/sam34/chip/sam_dacc.h
index 4581289edae..80a61d874a7 100644
--- a/arch/arm/src/sam34/chip/sam_dacc.h
+++ b/arch/arm/src/sam34/chip/sam_dacc.h
@@ -209,7 +209,7 @@
 #define DACC_WPMR_WPEN             (1 << 0)  /* Bit 0:  Write Protect Enable */
 #define DACC_WPMR_WPKEY_SHIFT      (8)       /* Bits 8-31: Write Protect KEY */
 #define DACC_WPMR_WPKEY_MASK       (0x00ffffff << DACC_WPMR_WPKEY_SHIFT)
-#  define DACC_WPMR_WPKEY_MASK     (0x00444143 << DACC_WPMR_WPKEY_SHIFT)
+#  define DACC_WPMR_WPKEY          (0x00444143 << DACC_WPMR_WPKEY_SHIFT)
 
 /* Write Protect Status register */
 
diff --git a/drivers/timers/timer.c b/drivers/timers/timer.c
index 6bcbc3b6346..0186e9977f1 100644
--- a/drivers/timers/timer.c
+++ b/drivers/timers/timer.c
@@ -258,7 +258,7 @@ static int timer_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
       {
         /* Stop the timer */
 
-        if (lower->ops->start)
+        if (lower->ops->stop)
           {
             ret = lower->ops->stop(lower);
           }