diff --git a/test/decoupled/1p/test_1p.input b/test/decoupled/1p/test_1p.input
index cb04a650a18f52d915bd021e9e32e79ede27aa12..a17f893969dfce001194fa02ada52d959bc23845 100644
--- a/test/decoupled/1p/test_1p.input
+++ b/test/decoupled/1p/test_1p.input
@@ -13,7 +13,7 @@ DtInitial = 0 # [s]
 TEnd = 0 # [s]
 
 [Problem]
-Delta = 1e-6 # [-] if this is commented in, it is used
+#Delta = 1e-6 # [-] if this is commented in, it is used
 
 [Grid]
 NumberOfCellsX = 1 # [-] resolution in x-direction
diff --git a/test/decoupled/1p/test_1pproblem.hh b/test/decoupled/1p/test_1pproblem.hh
index d2fb83c34b08ba6ba66ac9e8575892a27838433d..b508ec78564852ccdc72419365f260868fab0daf 100644
--- a/test/decoupled/1p/test_1pproblem.hh
+++ b/test/decoupled/1p/test_1pproblem.hh
@@ -127,7 +127,7 @@ public:
 
         try
         {
-            if (ParameterTree::tree().hasKey("delta"))
+            if (ParameterTree::tree().hasKey("Problem.Delta"))
                 delta_       = GET_RUNTIME_PARAM_FROM_GROUP(TypeTag, Scalar, Problem, Delta);
             int numRefine;
             numRefine = GET_RUNTIME_PARAM_FROM_GROUP(TypeTag, int, Grid, NumRefine);