diff --git a/Tests/Unit/Sim/FittingTestHelper.h b/Tests/Unit/Sim/FittingTestHelper.h
index cb8a51d37d6eb00d713aa503c216675d214ae3cf..63ed3722ae37f8c3f404284f81d04da2e8108b2f 100644
--- a/Tests/Unit/Sim/FittingTestHelper.h
+++ b/Tests/Unit/Sim/FittingTestHelper.h
@@ -5,7 +5,7 @@
 #include "Base/Const/Units.h"
 #include "Device/Beam/Beam.h"
 #include "Device/Data/Datafield.h"
-#include "Device/Detector/SphericalDetector.h"
+#include "Device/Detector/Detector2D.h"
 #include "Fit/Param/Parameters.h"
 #include "Sample/Material/MaterialFactoryFuncs.h"
 #include "Sample/Multilayer/Layer.h"
@@ -26,10 +26,10 @@ public:
 
     size_t m_nx;
     size_t m_ny;
-    const double m_xmin = -1.0 * Units::deg;
-    const double m_xmax = 4.0 * Units::deg;
-    const double m_ymin = 0.0 * Units::deg;
-    const double m_ymax = 4.0 * Units::deg;
+    const double m_xmin = -1 * Units::deg;
+    const double m_xmax = 4 * Units::deg;
+    const double m_ymin = 0 * Units::deg;
+    const double m_ymax = 4 * Units::deg;
 
     size_t m_builder_calls;
 
@@ -40,7 +40,7 @@ public:
         sample.addLayer(Layer(material));
         sample.addLayer(Layer(material));
 
-        auto* detector = new SphericalDetector(m_nx, m_xmin, m_xmax, m_ny, m_ymin, m_ymax);
+        auto* detector = new Detector2D(m_nx, m_xmin, m_xmax, m_ny, m_ymin, m_ymax);
         std::unique_ptr<ScatteringSimulation> result(
             new ScatteringSimulation(Beam(1., 1., 0.), sample, *detector));