diff --git a/GUI/Model/Fit/ParameterTreeItems.cpp b/GUI/Model/Fit/ParameterTreeItems.cpp
index 2fc3ceb40aba028267f7c503360d917909cbc3af..d1107ff06fce27ffe46ca7cc04eb01b04f606c3c 100644
--- a/GUI/Model/Fit/ParameterTreeItems.cpp
+++ b/GUI/Model/Fit/ParameterTreeItems.cpp
@@ -57,7 +57,7 @@ void ParameterItem::propagateValueToLink(double newValue)
     m_d.set(newValue);
 }
 
-void ParameterItem::linkToMaterial(MaterialItem* material, DoubleDescriptor d)
+void ParameterItem::linkToDescriptor(DoubleDescriptor d)
 {
     m_link = d.path();
     m_d = d;
diff --git a/GUI/Model/Fit/ParameterTreeItems.h b/GUI/Model/Fit/ParameterTreeItems.h
index a3ae523c94f01af3a1d243c57e044317311f8395..07a591c2d0cef64a0e1da2cca2afa23504f98da1 100644
--- a/GUI/Model/Fit/ParameterTreeItems.h
+++ b/GUI/Model/Fit/ParameterTreeItems.h
@@ -52,8 +52,8 @@ public:
     //! referring from fit parameters.
     QString link() const;
 
-    //! Links this item to the given value of a material.
-    void linkToMaterial(MaterialItem* material, DoubleDescriptor d);
+    //! Links this item to the given value defined by a descriptor.
+    void linkToDescriptor(DoubleDescriptor d);
 
     //! Links this item to the given session item.
     void linkToSessionItem(SessionItem* item);
diff --git a/GUI/Model/Job/ParameterTreeUtils.cpp b/GUI/Model/Job/ParameterTreeUtils.cpp
index 4d0bfb8568f0e37d3d5307d71b5155772bdc28e3..f64a7423aba98cc1717addea2cfa9adab1f1028d 100644
--- a/GUI/Model/Job/ParameterTreeUtils.cpp
+++ b/GUI/Model/Job/ParameterTreeUtils.cpp
@@ -115,7 +115,7 @@ void GUI::Model::ParameterTreeUtils::createParameterTree(JobItem* jobItem,
             auto* materialValue = materialLabel->model()->insertItem<ParameterItem>(materialLabel);
             materialValue->setDisplayName(d.label);
             materialValue->setValue(QVariant(d.get()));
-            materialValue->linkToMaterial(material, d);
+            materialValue->linkToDescriptor(d);
             if (recreateBackupValues)
                 container->setBackupValue(materialValue->link(), d.get());
         }