diff --git a/akka-testkit/src/test/scala/akka/testkit/Coroner.scala b/akka-testkit/src/test/scala/akka/testkit/Coroner.scala
index dd4b0b1f85..5fc3e3ab7f 100644
--- a/akka-testkit/src/test/scala/akka/testkit/Coroner.scala
+++ b/akka-testkit/src/test/scala/akka/testkit/Coroner.scala
@@ -89,7 +89,7 @@ object Coroner {
       val startThreads = threadMx.getThreadCount
       if (displayThreadCounts) {
         threadMx.resetPeakThreadCount()
-        out.println(s"Coroner Thread Count Start: current = ${startThreads} in ${reportTitle}")
+        out.println(s"Coroner Thread Count starts at $startThreads in $reportTitle")
       }
       watchedHandle.started()
       try {
@@ -106,7 +106,7 @@ object Coroner {
       } finally {
         if (displayThreadCounts) {
           val endThreads = threadMx.getThreadCount
-          out.println(s"Coroner Thread Count End: current = ${endThreads}, diff = ${endThreads - startThreads}, peak = ${threadMx.getPeakThreadCount} in ${reportTitle}")
+          out.println(s"Coroner Thread Count started at $startThreads, ended at $endThreads, peaked at ${threadMx.getPeakThreadCount} in $reportTitle")
         }
         out.flush()
         watchedHandle.finished()
diff --git a/akka-testkit/src/test/scala/akka/testkit/CoronerSpec.scala b/akka-testkit/src/test/scala/akka/testkit/CoronerSpec.scala
index d222a17f75..09e99be16b 100644
--- a/akka-testkit/src/test/scala/akka/testkit/CoronerSpec.scala
+++ b/akka-testkit/src/test/scala/akka/testkit/CoronerSpec.scala
@@ -49,8 +49,8 @@ class CoronerSpec extends WordSpec with MustMatchers {
         coroner.cancel()
         Await.ready(coroner, 1.second)
       })
-      report must include("Coroner Thread Count Start:")
-      report must include("Coroner Thread Count End:")
+      report must include("Coroner Thread Count starts at ")
+      report must include("Coroner Thread Count started at ")
       report must include("XXXX")
       report must not include ("Coroner's Report")
     }