Index: uspace/app/mkexfat/mkexfat.c
===================================================================
--- uspace/app/mkexfat/mkexfat.c	(revision 00af6584167e6b61add33cb452115694ce07582c)
+++ uspace/app/mkexfat/mkexfat.c	(revision aa37d6fc3681167b2e699b27ebb00de96a9368b4)
@@ -422,5 +422,5 @@
  *
  * @param service_id  The service id.
- * @param cfg  Pointer to the exfat configuration number.
+ * @param cfg  Pointer to the exfat configuration structure.
  * @param cur_cls  Cluster index from where to start the allocation.
  * @param ncls  Number of clusters to allocate.
@@ -696,4 +696,9 @@
 }
 
+/** Check if a given number is a power of two.
+ *
+ * @param n   The number to check.
+ * @return    true if n is a power of two, false otherwise.
+ */
 static bool
 is_power_of_two(unsigned long n)