diff --git a/src/foam/matrices/scalarMatrices/scalarSquareMatrix.C b/src/foam/matrices/scalarMatrices/scalarSquareMatrix.C
index 8af6d640f..4cc2b1d2d 100644
--- a/src/foam/matrices/scalarMatrices/scalarSquareMatrix.C
+++ b/src/foam/matrices/scalarMatrices/scalarSquareMatrix.C
@@ -47,7 +47,13 @@ Foam::scalarSquareMatrix::scalarSquareMatrix
 {}
 
 
-Foam::scalarSquareMatrix::scalarSquareMatrix(const scalarSquareMatrix& matrix)
+// Foam::scalarSquareMatrix::scalarSquareMatrix(const scalarSquareMatrix& matrix)
+// :
+//     SquareMatrix<scalar>(matrix)
+// {}
+
+
+Foam::scalarSquareMatrix::scalarSquareMatrix(const SquareMatrix<scalar>& matrix)
 :
     SquareMatrix<scalar>(matrix)
 {}
diff --git a/src/foam/matrices/scalarMatrices/scalarSquareMatrix.H b/src/foam/matrices/scalarMatrices/scalarSquareMatrix.H
index ab2e7680a..468d5d8ae 100644
--- a/src/foam/matrices/scalarMatrices/scalarSquareMatrix.H
+++ b/src/foam/matrices/scalarMatrices/scalarSquareMatrix.H
@@ -45,14 +45,13 @@ namespace Foam
 {
 
 /*---------------------------------------------------------------------------*\
-                           Class scalarSquareMatrix Declaration
+                    Class scalarSquareMatrix Declaration
 \*---------------------------------------------------------------------------*/
 
 class scalarSquareMatrix
 :
     public SquareMatrix<scalar>
 {
-
 public:
 
     // Constructors
@@ -66,8 +65,11 @@ public:
         //- Construct given size and coefficient value
         scalarSquareMatrix(const label, const scalar v);
 
-        //- Construct as copy
-        scalarSquareMatrix(const scalarSquareMatrix&);
+        // //- Construct as copy
+        // scalarSquareMatrix(const scalarSquareMatrix&);
+
+        //- Construct as copy of base
+        scalarSquareMatrix(const SquareMatrix<scalar>&);
 
         //- Construct from Istream
         scalarSquareMatrix(Istream&);