diff --git a/GUI/Model/Job/FitParameterItem.cpp b/GUI/Model/Job/FitParameterItem.cpp
index 5a80ead8e8e487bd138bc57b01c054f124e92a47..49bbec78e8e52f472a53816d301c190a425e52e6 100644
--- a/GUI/Model/Job/FitParameterItem.cpp
+++ b/GUI/Model/Job/FitParameterItem.cpp
@@ -48,9 +48,9 @@ FitParameterItem::FitParameterItem()
     : SessionItem(M_TYPE)
 {
     addProperty(P_TYPE, fitParameterTypeCombo().variant());
-    addProperty(P_START_VALUE, 0.0);
-    addProperty(P_MIN, 0.0);
-    addProperty(P_MAX, 0.0)->setEnabled(false);
+    addProperty(P_START_VALUE, double(0.0));
+    addProperty(P_MIN, double(0.0));
+    addProperty(P_MAX, double(0.0))->setEnabled(false);
     registerTag(T_LINK, 0, -1, {FitParameterLinkItem::M_TYPE});
     setDefaultTag(T_LINK);
 
diff --git a/GUI/Model/Job/FitSuiteItem.cpp b/GUI/Model/Job/FitSuiteItem.cpp
index f04d323f4fbff9325861ebe892c9216826a09781..56502cdb5c005bba41a029938bca1406601f68a4 100644
--- a/GUI/Model/Job/FitSuiteItem.cpp
+++ b/GUI/Model/Job/FitSuiteItem.cpp
@@ -21,9 +21,9 @@
 FitSuiteItem::FitSuiteItem()
     : SessionItem(M_TYPE)
 {
-    addProperty(P_UPDATE_INTERVAL, 10);
-    addProperty(P_ITERATION_COUNT, 0);
-    addProperty(P_CHI2, 0.0);
+    addProperty(P_UPDATE_INTERVAL, int(10));
+    addProperty(P_ITERATION_COUNT, int(0));
+    addProperty(P_CHI2, double(0.0));
 
     registerTag(T_FIT_PARAMETERS_CONTAINER, 1, 1, {FitParameterContainerItem::M_TYPE});
     registerTag(T_MINIMIZER, 1, 1, {MinimizerContainerItem::M_TYPE});