diff --git a/invivos/app.R b/invivos/app.R
index 2cb36d1..1cfd3be 100755
--- a/invivos/app.R
+++ b/invivos/app.R
@@ -187,7 +187,7 @@ server <- function(input, output) {
     if ("Group" %in% colnames(df_def)){
       df_def<-df_def %>% select(-"Group") 
     }
-    df_def<-merge(dades$taula %>% select(-Group), df_def[,c("ID animal", "group")], all=T) %>% select(c(`ID animal`, `ID tumor`, Volume, Cage, Major, Minor, group))
+    df_def<-merge(dades$taula %>% select(-Group), df_def[,c("ID animal", "group")] %>% unique, all=T, by="ID animal") %>% select(c(`ID animal`, `ID tumor`, Volume, Cage, Major, Minor, group))
     df_def[!paste0(df_def$`ID animal`, df_def$`ID tumor`) %in% paste0(df$`ID animal`, df$`ID tumor`),"group"]<-NA
     dades$db<-df_def