diff --git a/src/rexbacklight.c b/src/rexbacklight.c
index 74f04ea..267ebef 100644
--- a/src/rexbacklight.c
+++ b/src/rexbacklight.c
@@ -15,6 +15,8 @@
 	You should have received a copy of the GNU General Public License
 	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+
+//Needed for usleep to work
 #define _DEFAULT_SOURCE
 
 #include <stdio.h>
@@ -32,7 +34,7 @@ static const char* backlight_dir = "/sys/class/backlight/";
 static const char* backlight_file = "brightness";
 static const char* max_backlight_file = "max_brightness";
 
-//Used to store a dynamic array of dynamic strings and size
+//Used to store a dynamic array of dynamic strings and number of strings
 struct string_array{
 	char** list;
 	int size;
@@ -127,7 +129,7 @@ void fade_out(int iv, int fv, int ms_duration, int steps){
 	float value = iv;        //current value to write to file
 	int step_delta = ms_duration / steps;
 	int step_inc = step_delta;
-	float brdelta = (float)(fv - iv) / steps; //amount brightness needs to change overall
+	float brdelta = (float)(fv - iv) / steps; //amount brightness needs to change per iteration
 
 	while(ms_duration > tdelta){
 		//write