diff --git a/drivers/sensors/lm75.c b/drivers/sensors/lm75.c
index f5f4ce6fa78..92341f86c4e 100644
--- a/drivers/sensors/lm75.c
+++ b/drivers/sensors/lm75.c
@@ -449,7 +449,7 @@ static int lm75_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         }
         break;
 
-      /* Wrtie to the configuration register. Arg:  uint8_t value */
+      /* Write to the configuration register. Arg:  uint8_t value */
 
       case SNIOC_WRITECONF:
         ret = lm75_writeconf(priv, (uint8_t)arg);
diff --git a/sched/signal/sig_timedwait.c b/sched/signal/sig_timedwait.c
index d7be4afde82..270d51017d6 100644
--- a/sched/signal/sig_timedwait.c
+++ b/sched/signal/sig_timedwait.c
@@ -471,7 +471,7 @@ int nxsig_timedwait(FAR const sigset_t *set, FAR struct siginfo *info,
  *   is forever.
  *
  *   If the info argument is non-NULL, the selected signal number is stored
- *   in the si_signo member and the cause of the signal is store din the
+ *   in the si_signo member and the cause of the signal is stored in the
  *   si_code member.  The content of si_value is only meaningful if the
  *   signal was generated by sigqueue().
  *