diff --git a/include/easycsv.h b/include/easycsv.h
index a46dbc4..5892339 100644
--- a/include/easycsv.h
+++ b/include/easycsv.h
@@ -139,10 +139,11 @@ easycsv_find_num_value(const easycsv*,
 
 /** 
  * Read string in a specific cell 
+ * String is heap-allocated, it must be destroyed (free'd) manually
  * @param[in] constant pointer to easycsv structure 
  * @param[in] row number
  * @param[in] column number
- * @return string value of cell, NULL if empty cell
+ * @return string value of cell, NULL if error
  */
 char*
 easycsv_read_value(const easycsv*,