diff --git a/models/ColorModel.cpp b/models/ColorModel.cpp
index 8b29785a..4cbc3e2a 100644
--- a/models/ColorModel.cpp
+++ b/models/ColorModel.cpp
@@ -869,7 +869,7 @@ double ScaLBL_ColorModel::MorphOpenConnected(double target_volume_change){
 		signed char water=2;
 		signed char notwater=1;
 		double SW=-(target_volume_change)/count_connected;
-		MorphOpen(distance, id_connected, Dm, SW, notwater, water);
+		MorphOpen(distance, id_connected, Dm, SW, water, notwater);
 
 		int count_morphopen=0.0;
 		for (int k=0; k<nz; k++){
@@ -887,7 +887,7 @@ double ScaLBL_ColorModel::MorphOpenConnected(double target_volume_change){
 		count_morphopen=sumReduce( Dm->Comm, count_morphopen);
 		volume_change = double(count_morphopen - count_connected);
 		
-		if (rank==0)  printf("   opening of connected oil %f \n",volume_change);
+		if (rank==0)  printf("   opening of connected oil %f \n",volume_change/count_connected);
 
 		ScaLBL_CopyToDevice(Phi,phase.data(),N*sizeof(double));
 		ScaLBL_PhaseField_Init(dvcMap, Phi, Den, Aq, Bq, 0, ScaLBL_Comm->LastExterior(), Np);