diff --git a/src/main.nf b/src/main.nf
index 3e9cfd695c83943bea7012371409fb85c08e4089..563a087f6349e0ec67f21b77e947210529cd8298 100644
--- a/src/main.nf
+++ b/src/main.nf
@@ -8,9 +8,7 @@ params.kmer_size = 31
 include { SPLIT } from "./modules/split"
 include { FASTKMERS } from "./modules/fastkmers"
 include { MERGEKMER } from "./modules/mergekmer"
-include { COLLATEKMER as COLLATEKMER1 } from "./modules/mergekmer"
-include { COLLATEKMER as COLLATEKMER2} from "./modules/mergekmer"
-
+include { COLLATEKMER} from "./modules/mergekmer"
 
 Channel.fromPath( file(params.csv) )
                     .splitCsv(header: true)
@@ -26,6 +24,5 @@ workflow {
   SPLIT(fastq.r1.mix(fastq.r2))
   FASTKMERS(SPLIT.out.fastq.transpose())
   MERGEKMER(FASTKMERS.out.csv.groupTuple())
-  COLLATEKMER1(MERGEKMER.out.csv.map{it -> it[1]}.collate(5))
-  COLLATEKMER2(COLLATEKMER1.out.csv.collect())
+  COLLATEKMER(MERGEKMER.out.csv.map{it -> it[1]}.collect())
 }