@@ -41,7 +41,7 @@ vcf2mut_cat <- function(vcf, genome, name=NULL, seqs=NULL){

   check <- lapply(c('BSgenome', 'SummarizedExperiment'), function(pack){

     if(!requireNamespace(pack, quietly = TRUE)){

-      stop(paste0('Please install the library ', pack, 

+       stop(paste0('Please install the library ', pack, 

                   ' to use this function.'),

            call. = TRUE)

     }