diff --git a/dune/solvers/transferoperators/genericmultigridtransfer.hh b/dune/solvers/transferoperators/genericmultigridtransfer.hh
index 2ea769e543d9923cd7d9470224e5f1c88956e697..c1fd17e8e769502bc375578bdf297d6f28ce07f7 100644
--- a/dune/solvers/transferoperators/genericmultigridtransfer.hh
+++ b/dune/solvers/transferoperators/genericmultigridtransfer.hh
@@ -55,7 +55,7 @@ public:
     template<class MatrixType>
     static bool diagonalIsOne(const MatrixType& A, unsigned int j)
     {
-        if (j>=int(A.N()))
+        if (j>=A.N())
             return A[0][0]>1-1e-5;
         return A[j][j]>1-1e-5;
     }