diff --git a/ElectrostaticsFloating/floating.pro b/ElectrostaticsFloating/floating.pro
index 290bba93bf22ffa08f5d1c74f8e8b757b8b756c0..de0482d5450b7e33a766b9898f14a67323b63326 100644
--- a/ElectrostaticsFloating/floating.pro
+++ b/ElectrostaticsFloating/floating.pro
@@ -144,7 +144,7 @@ FunctionSpace {
      carried by that electrode. Indeed, let us consider the electrostatic weak
      formulation derived in Tutorial 1: find v in Hgrad_v_Ele such that
 
-     (epsilon grad v, grad v')_Vol_Ele + (n . (epsilon grad v), v')_Bnd_Vol_Ele = 0
+     (epsilon grad v, grad v')_Vol_Ele - (n . (epsilon grad v), v')_Bnd_Vol_Ele = 0
 
      holds for all test functions v'. When the test-function v' is BF_electrode,
      the boundary term reduces to
@@ -179,7 +179,7 @@ FunctionSpace {
     }
     Constraint {
       { NameOfCoef vn; EntityType NodesOf;
-        NameOfConstraint Dirichlet_Ele; } // unused in this model, left for completeness
+        NameOfConstraint Dirichlet_Ele; }
       { NameOfCoef GlobalPotential; EntityType GroupsOfNodesOf;
 	NameOfConstraint SetGlobalPotential; }
       { NameOfCoef ArmatureCharge; EntityType GroupsOfNodesOf;