1 files changed, 4 insertions, 1 deletions
diff --git a/test/files/scalacheck/parallel-collections/ParallelIterableCheck.scala b/test/files/scalacheck/parallel-collections/ParallelIterableCheck.scala
index 0acdb2b0a7..d2d6119997 100644
--- a/test/files/scalacheck/parallel-collections/ParallelIterableCheck.scala
+++ b/test/files/scalacheck/parallel-collections/ParallelIterableCheck.scala
@@ -146,7 +146,10 @@ abstract class ParallelIterableCheck[T](collName: String) extends Properties(col
         println("mapped to: ")
         println(ms)
         println(mp)
-        println("valid: " + !checkDataStructureInvariants(ms, mp))
+        println("sizes: ")
+        println(ms.size)
+        println(mp.size)
+        println("valid: " + checkDataStructureInvariants(ms, mp))
       }
       ("op index: " + ind) |: (areEqual(ms, mp) && checkDataStructureInvariants(ms, mp))
     }