diff --git a/Nitrogen-CIT/app.R b/Nitrogen-CIT/app.R
index 273f6de..0805937 100644
--- a/Nitrogen-CIT/app.R
+++ b/Nitrogen-CIT/app.R
@@ -1,5 +1,6 @@
 library(shiny)
 library(readxl)
+library(openxlsx)
 library(DT)
 library(dplyr)
 
@@ -107,7 +108,7 @@ server <- function(input, output) {
     },
     content = function(file){
       
-      writexl::write_xlsx(list("Nitrogen"=dades$taula), file)
+      write.xlsx(list("Nitrogen"=dades$taula), file)
     }
   )