diff --git a/nd4s/src/main/scala/org/nd4s/Implicits.scala b/nd4s/src/main/scala/org/nd4s/Implicits.scala
index 76e75b95d..204b4bbc1 100644
--- a/nd4s/src/main/scala/org/nd4s/Implicits.scala
+++ b/nd4s/src/main/scala/org/nd4s/Implicits.scala
@@ -48,7 +48,7 @@ object Implicits {
       Nd4j.create(underlying, shape, ord.value, offset)
 
     def asNDArray(shape: Int*): INDArray =
-      Nd4j.create(underlying, shape.toArray)
+      Nd4j.create(underlying, shape.toArray: _*)
 
     def toNDArray: INDArray = Nd4j.create(underlying)
   }
@@ -64,7 +64,7 @@ object Implicits {
       Nd4j.create(underlying, shape, offset, ord.value)
 
     def asNDArray(shape: Int*): INDArray =
-      Nd4j.create(underlying, shape.toArray)
+      Nd4j.create(underlying, shape.toArray: _*)
 
     def toNDArray: INDArray = Nd4j.create(underlying)
   }
@@ -80,7 +80,7 @@ object Implicits {
       Nd4j.create(underlying.map(_.toFloat), shape, ord.value, offset)
 
     def asNDArray(shape: Int*): INDArray =
-      Nd4j.create(underlying.map(_.toFloat), shape.toArray)
+      Nd4j.create(underlying.map(_.toFloat), shape.toArray: _*)
 
     def toNDArray: INDArray = Nd4j.create(underlying.map(_.toFloat).toArray)
   }
diff --git a/nd4s/src/main/scala/org/nd4s/OperatableNDArray.scala b/nd4s/src/main/scala/org/nd4s/OperatableNDArray.scala
index 8ea927062..82a227e02 100644
--- a/nd4s/src/main/scala/org/nd4s/OperatableNDArray.scala
+++ b/nd4s/src/main/scala/org/nd4s/OperatableNDArray.scala
@@ -25,7 +25,7 @@ trait OperatableNDArray[A <: INDArray] {
   val underlying: A
 
   // to keep compatibility with Predef.any2stringadd syntax.
-  def +(that: String): String = underlying.toString + that
+  def +(that: String): String = underlying.toString() + that
 
   // --- INDArray operators
   def +(that: INDArray)(implicit ev: NDArrayEvidence[A, _]): A =