diff --git a/src/repertoire.r b/src/repertoire.r
index 13c47fa..79e98ed 100644
--- a/src/repertoire.r
+++ b/src/repertoire.r
@@ -13,7 +13,7 @@ generate_repertoire <- function(number_of_sequences) {
 process_data <- function(data) {
   dna_sequence <- Biostrings::DNAStringSet(data$sequence)
   data$sequence <- Biostrings::reverseComplement(dna_sequence)
-  names(data$sequence) <- paste(rownames(data), data$v_call, data$j_call)
+  names(data$sequence) <- paste(rownames(data), data$v_call, data$j_call, " ")
   Biostrings::writeXStringSet(data$sequence, "data/sequence.fasta")
 }