diff --git a/dune/solvers/norms/pnorm.hh b/dune/solvers/norms/pnorm.hh
index a7b13765b9eb24a284a1b5981e17ec4c7b712ed9..dbaab3aff2d469fdf6e2f2b68098c74c8f31573a 100644
--- a/dune/solvers/norms/pnorm.hh
+++ b/dune/solvers/norms/pnorm.hh
@@ -90,7 +90,7 @@ class PNorm: public Norm<V>
 
 	private:
 		double alpha;
-		double p;
+    int p;
 		
 };