diff --git a/src/convert_M_in_KM.c b/src/convert_M_in_KM.c
index 66ef45a..966872e 100644
--- a/src/convert_M_in_KM.c
+++ b/src/convert_M_in_KM.c
@@ -1,7 +1,7 @@
 
 #include "convert_M_in_KM.h"
 #include <stdio.h>
-
+//convert length
 double meter_to_kilometer(double meter) {
     return meter / 1000.0;
 }