diff --git a/demo-scala/src/UnweightedStream.scala b/demo-scala/src/UnweightedStream.scala
index 1b98c9a..7cfb2d2 100644
--- a/demo-scala/src/UnweightedStream.scala
+++ b/demo-scala/src/UnweightedStream.scala
@@ -4,6 +4,7 @@ import SamplingTraversableOnce._
 import gr.james.sampling.{RandomSampling, WatermanSampling}
 
 import scala.collection.JavaConverters._
+import scala.language.implicitConversions
 
 /**
   * Extension of [[TraversableOnce]] with the <code>sample</code> method.
diff --git a/demo-scala/src/WeightedStream.scala b/demo-scala/src/WeightedStream.scala
index 2db5387..0299210 100644
--- a/demo-scala/src/WeightedStream.scala
+++ b/demo-scala/src/WeightedStream.scala
@@ -4,6 +4,7 @@ import WeightedSamplingTraversableOnce._
 import gr.james.sampling.{ChaoSampling, WeightedRandomSampling}
 
 import scala.collection.JavaConverters._
+import scala.language.implicitConversions
 
 /**
   * Extension of [[TraversableOnce]] with the <code>sample</code> method.