diff --git a/bin/11_GBIF_SpeciesKey_to_OTTID.R b/bin/11_GBIF_SpeciesKey_to_OTTID.R
index 5db8ca0..34ad861 100755
--- a/bin/11_GBIF_SpeciesKey_to_OTTID.R
+++ b/bin/11_GBIF_SpeciesKey_to_OTTID.R
@@ -140,7 +140,7 @@ spnames <- alply(.data = datt$specieskey, .margins = 1, .fun = function(x){
  return(res)
 }, .parallel = parall)
 
-spnames <- rbindlist(spnames)
+spnames <- rbindlist(spnames, fill = TRUE)
 
 
 cat("..Number of species found: ", length(na.omit(unique(spnames$species))), "\n")