diff --git a/biopet-tools/src/test/scala/nl/lumc/sasc/biopet/tools/bamstats/StatsTest.scala b/biopet-tools/src/test/scala/nl/lumc/sasc/biopet/tools/bamstats/StatsTest.scala
index 78ec786fedac46626f578eac26b10dbb7ee5b0a7..8ad0b8354cd858e80ae93d854854bc0b06c73a8c 100644
--- a/biopet-tools/src/test/scala/nl/lumc/sasc/biopet/tools/bamstats/StatsTest.scala
+++ b/biopet-tools/src/test/scala/nl/lumc/sasc/biopet/tools/bamstats/StatsTest.scala
@@ -15,12 +15,6 @@ class StatsTest extends TestNGSuite with Matchers {
 
     s1 shouldBe s2
 
-    s1.totalReads += 1
-    s1 should not be s2
-
-    s2.totalReads += 1
-    s1 shouldBe s2
-
     s1.mappingQualityHistogram.add(1)
     s1 should not be s2
 
@@ -32,10 +26,6 @@ class StatsTest extends TestNGSuite with Matchers {
   def testEmpty(): Unit = {
     val stats = new Stats()
 
-    stats.totalReads shouldBe 0
-    stats.unmapped shouldBe 0
-    stats.secondary shouldBe 0
-
     stats.clippingHistogram.countsMap shouldBe empty
     stats.insertSizeHistogram.countsMap shouldBe empty
     stats.mappingQualityHistogram.countsMap shouldBe empty
@@ -50,13 +40,10 @@ class StatsTest extends TestNGSuite with Matchers {
     val s1 = new Stats()
     val s2 = new Stats()
 
-    s2.totalReads += 1
     s2._3_ClippingHistogram.add(1)
 
-    s1.totalReads shouldBe 0
     s1._3_ClippingHistogram.get(1) shouldBe None
     s1 += s2
-    s1.totalReads shouldBe 1
     s1._3_ClippingHistogram.get(1) shouldBe Some(1)
   }
 }