diff --git a/src/convert_ton_to_kg.h b/src/convert_ton_to_kg.h
index 3ad55e5..9591ea6 100644
--- a/src/convert_ton_to_kg.h
+++ b/src/convert_ton_to_kg.h
@@ -3,6 +3,12 @@
 #ifndef THEADMIRALS_CONVERT_TON_TO_KG_H
 #define THEADMIRALS_CONVERT_TON_TO_KG_H
 
+// Convert tons to kilograms
+// Parameters:
+//   tons: weight in tons
+// Returns:
+//   The equivalent weight in kilograms
+
 
 double tons_to_kg(double tons);