diff --git a/drivers/mtd/mtd_progmem.c b/drivers/mtd/mtd_progmem.c
index b0dbfb2a28..0ea769a595 100644
--- a/drivers/mtd/mtd_progmem.c
+++ b/drivers/mtd/mtd_progmem.c
@@ -124,10 +124,10 @@ static struct progmem_dev_s g_progmem =
  ****************************************************************************/
 
 /****************************************************************************
- * Name: progmem_erase
+ * Name: progmem_log2
  *
  * Description:
- *   Erase several blocks, each of the size previously reported.
+ *   Check block size is exact powers of two.
  *
  ****************************************************************************/
 
diff --git a/include/nuttx/mtd/configdata.h b/include/nuttx/mtd/configdata.h
index ade45e4d87..338a78f005 100644
--- a/include/nuttx/mtd/configdata.h
+++ b/include/nuttx/mtd/configdata.h
@@ -61,13 +61,13 @@
  * CFGDIOC_GETCONFIG - Get a specified Config Data item.
  *
  *   ioctl argument:  Pointer to a config_data_s structure to receive the
- *                    config data.  All fields of the strucure must be
+ *                    config data.  All fields of the structure must be
  *                    specified (i.e. id, instance, pointer and len).
  *
  * CFGDIOC_SETCONFIG - Set a specified Config Data Item
  *
  *   ioctl argument:  Pointer to a config_data_s structure to receive the
- *                    config data.  All fields of the strucure must be
+ *                    config data.  All fields of the structure must be
  *                    specified (i.e. id, instance, pointer and len).
  */