diff --git a/public/mapping/src/test/scala/nl/lumc/sasc/biopet/pipelines/mapping/MappingTest.scala b/public/mapping/src/test/scala/nl/lumc/sasc/biopet/pipelines/mapping/MappingTest.scala
index 71953da59f9b917d9c28a3a398198a2e823dd82a..70565ffdd2e719c5a7b478b4184ed9b468d416f3 100644
--- a/public/mapping/src/test/scala/nl/lumc/sasc/biopet/pipelines/mapping/MappingTest.scala
+++ b/public/mapping/src/test/scala/nl/lumc/sasc/biopet/pipelines/mapping/MappingTest.scala
@@ -92,7 +92,7 @@ class MappingTest extends TestNGSuite with Matchers {
     //Flexiprep
     mapping.functions.count(_.isInstanceOf[Fastqc]) shouldBe (if (skipFlexiprep) 0 else if (paired) 4 else 2)
     mapping.functions.count(_.isInstanceOf[Zcat]) shouldBe (if (!zipped || (chunks > 1 && skipFlexiprep)) 0 else if (paired) 2 else 1)
-    mapping.functions.count(_.isInstanceOf[SeqStat]) shouldBe ((if (skipFlexiprep) 0 else if (paired) 4 else 2) * chunks)
+    mapping.functions.count(_.isInstanceOf[SeqStat]) shouldBe ((if (skipFlexiprep) 0 else if (paired) 2 else 1) * (chunks + 1))
     mapping.functions.count(_.isInstanceOf[SeqtkSeq]) shouldBe ((if (skipFlexiprep) 0 else if (paired) 2 else 1) * chunks)
     mapping.functions.count(_.isInstanceOf[Cutadapt]) shouldBe ((if (skipFlexiprep) 0 else if (paired) 2 else 1) * chunks)
     mapping.functions.count(_.isInstanceOf[FastqSync]) shouldBe ((if (skipFlexiprep) 0 else if (paired && !skipFlexiprep) 1 else 0) * chunks)