diff --git a/src/convert_g_to_mg.h b/src/convert_g_to_mg.h
index 557244a..e764c7e 100644
--- a/src/convert_g_to_mg.h
+++ b/src/convert_g_to_mg.h
@@ -4,7 +4,11 @@
 
 
 
-
+// Convert grams to milligrams
+// Parameters:
+//   grams: weight in grams
+// Returns:
+//   The equivalent weight in milligrams
 
 double g_to_mg(double grams);